SCIENTIFIC ABSTRACT ALADYEV, I.Y. - ADRIANOVA, C.N.

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December 31, 1967
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J V/G,&-59-4-12/21 An Investigation ~-f heat Exchange in a Gas Combustion Chamber governed almost uniquely by 117he Rey-nolds number and accordingly the other criteria ccn~~erned must have considerably less affect. A finther way of showing the "ose relatioLship between heat exchange criteria and Reynolds number is illustrated graphically in Fig-3 from which approximate heat exchange formulae are derived. The stru,~~ture of the formulae reveals the nature of the influence on heat exchange of such important factors as -Load and theoretical ccmbus-~dcn temperatures. It may be conclude(! f2~,om the experimental graphs that under the gi-ven experimenTial conditions the hydrodynamic chaxa,:~teristi-:,,s )f f1cw represented by the Reynolds n~amber ha.-ve a domiLatir-g 1-nfluence on heat exchange. Wit-hiiL the r&uge ~'-onsidered other factors are relatively unimportant and. may be neglected. Attempts to generalise the expeeimental data by oonstracting corresponding 3: 6 1 C-3. '; i 7,n--z1,ips as function of the Bolzmann criterion are Mijc~h less satisfactory as will be seen from the graph gi'ven in The general fo:Dm of the relationship is ob-,riously si.m.11ar to that given in Fig.2 but the scatter Card 6/? of tb-e poj-nts isci'mueli greater and there ean be no questio SOV/96--59-4-12/21 An Investiga-'%-,ion of Heat Exchange Ju-i a Gas Combustion Chamber of there beJng a uiii-que relaticnship.. This is partly beza.use the Bol.,,jaawi ~~.v-iterion dccs not uniquely deillerm;.ne the p-o;;,3sp, of h-,at exchange in combustion c,liawba:-:~a in. general and for the given conditions in the da-iclulsj-oa of the theoretical t e mp e r a i.;,j.- K, -3 in the Bolzmann criteiicn as a condition of Lu)dqiene!~;~i is; n:)-c s-uffi~~ieritly well foanded as this i;emperatu:-e do,,:3 L10". im combustion chambers. There a2--- f i t~~ ~-i 2.- ~) s ASSOCIATION --',,ristitiAt All SSSR (Power institute of the k2~adpn-., of Card 7/7 Akadmiya - 24~~. ImaroticheaklY 1z4%-IV4t Lo-sk%I-ry I i-h-styy toploob- (Co-tim AAdiatt= LWL Zz-"Z*) H.so-. 114- AS SSZ;ii, IS'W. 2',A. P. L".t. Aup -pi.. prutwi. td.. N.A. Kittay-, A-J-!~.-; W. of O.S. C-Lk.,; Ll.. T.W. ?-MR?W'Sj -1- L-k is ----4&1 for scientlats -I ezc.-arx wor"'tr In va.-- brar~ha- or -A lniustry c-c-*d witb xnJ h~t tr~*- for P-bl.-. ccivu=1 t,- txk .... I.t. of 19 or1cI"1,AmIzI.s on probI7., . dy.a.d.s. Th. f.2-irg subjeot. or r.n..t ssct~-,-, -1.t----n f ol- f a" -..r Th --y -i srs d Z-h d .... It.. t" of the t.b ~ th. d..t. ott-1-4 r 4.1-1A of h-t -.-sf- .1-Y. t.k"nc t N.A., I of H.... 'lc No~I.d 1. pip.. zAaL..4. -1 9,r1r.- 3) "4r Tr-srar 'A Vart-cal P'P-- In C-sou... 56 "t.r of C-P'-% F~- OW 61 T-8f.r of We- 1. of oz E..t 97 -ac .1, th. Proo... of Cosbimd 107 L-h-.- of B-di-- WItb Arbltrw7 1,djo.tri... 11"t-on, M.t. APIs-,. of, e4wpooscz. of -I r~ --of .. Uit- an4 ?"U"1" 11"~ b7 t~o M.U-d ZT --- - - - - --1 -- 133 A4rLs~, V.2- R"I~trld lost-t. for M-e~C tt,. y1_ of rdIAtjon 145 '7 of tk-' F1--t Rri- of 3os. C.-st-ti.a. of ?~dlo 150 DU'r-, r.3-, -,.d MV~-,,nc M-*~~ for C-1-2.tlog tr.Twi.. R.C'- of 3*4 ;-. 161 TkA"" Nod411r.C of ths 12s-nt- of 1?6 -,~J- A.r., -A DIrf- b t7y tt. :;I-I~ t h.ra. lea 7-7 F.A !:AhAkav, Ami A-A- 14 Its -,Ic. of th. I- of 205 3.A. Ehl~stsj- P.;.S d""" "t L-" 1~t--- or ?'I~Id. in P,,., 22. 1 B.11in, Z33 A-711' IBLZI Lihr.-7 or Cong... S/124'61/000/01"/02'17/ D237/D305 AUTHORS: Pilimonov, S.S., Khrustalev, B.A., and Adrianov, V~N. TITLE: Mleasuring convective and radiant components of a complex heat transfer by two radiometers PERIODICAL: Referativnyy zhurnal, Mekhanika, no, 11, 19061, 95, abstract 11B630 (Sb. Konvektiv, i luchistyy teploob- men, M., AN SSSR, 1960, 133 - 144) TEXT: The method of separate measurements of radiant and convec- iive streams proposed by V.S. Kocho (Stall, 1950, No. 3) depends on simultaneous measurement of heat intensity on the given point of the surface by two radiometers, whose heat absorbing elements have different coefficients of absorption, assuming radiant and conve,--- tive streams on the surface of the meters, are independent of each other. The results are given of an experimental check (by L/ _L mears of three radiometers),Of applicability of the ~-iethod in various com- bustion chambers. Abstractor's note: Complete translation;, Card 1/1 ADRIANOV, V.N.; POLYAK, G.L. Uning the photographic method for the light modeling of radiant heat exchange. Zhur.nauch.i prikl.fotA kin. 5 no.2:123-132 Mr-Ap 160. 1. Energeticheskiy:institut AN SS~R. (MIRA 14:5) (photographic be'nsitometry) (Heat-Radiation and absorption) 69203 S/09-6/60/000/06/013/025 E194/E284 AUTHOR: Ldrianov V. N., Candidate of Technical Sciences TITLE: Some Problems of the Theory of Radiant Heat Exchange in Unidimensional Systems PERIODICAL: Teploenergetika, 1960, Nr 6, Pp 63-66 (USSR) A3ir--"T!,1!-,CT: In the general theory of radiant heat exchange in absorbe media particular interest attaches to symmetrical boundary problems (of a flat layer, a cylinder and a sphere) when there is local radiant equilibrium. In formulating these problems one is usually given the radiation and emission parameters of the bodies that surround the system under-consideration; the emission properties are given for all intermediate bodies and media within the system and the resultant radiation at each point of their volume or surface is assumed zero. It is then required to determine the distribution of resultant radiant flux on the surfaces of bodies bounding this radiating system. Accurate mathematical solution of these boundary problems is very difficult and, therefore, various approximate methods have been used which are justified to some extent by the spatial Card 1/4 symmetry of the probleins. The solutions that have been 69203 5/096/60/000/06/013/025 E194/E284 Some Problems of the Theory of Radiant Heat Exchange in Unidi.mensi,nal Systems cbtained for flat layers may be considered satisfactory but those for cylindrical and spherical layers are not. A symmetrical system (flat cylindrical or spherical) with semi-transparent envelopes is represented diagrammatically in Fig 1; the system is bounded by two bodies between which there are a number of thin semi-transparent envelopes which contain no energy soiu?ces or sinks. Transmission and reflection coefficien for tho different envelopes are given. Expression (1) is derived for the resultant radiant flux through a particular envelope whilst the radiant flux in the negative direction is given by expression (2). The resultant radiant flux allowinG for absor tion and reflection is then given by expression (3~ which, when applied to all the envelopes in turn gives the system of Eqs(4). This is finally developed to the form of expression (9) for the resultant positive heat flow. It is then shown that this formula may be converted Card 2/4 in-to existing known forms in particular cases, It is 6 9:20 3 S/096/60/000/06/013/025 E194/'E284 Some Problems of the Theory of Radiant Heat Exchange in Unidimensional Systems valid for flat, cylindrical or spherical systems with any number of envelopes with minor modifications. Symmetrical problems in a radiation absorbing medium are then considered with reference to the diagram of Fig 2 in which it is assumed that the space betwean the two boundary surfaces is fillea with radiation absorbing medium in a state of local radiant equilibrium. The resistance is then expressed as the limit of a sum of resistances of an infinitude of semi-transparent envelopes to obtain expression (11). This may be combined with expression (9) to obtain expression (12) for the resultant radiant flux, in symmetrical problems of this kind. Minor modific,-tions are then made to the equation for the cases of flat cylindrical and spherical 1 ers to obtain the final expressions (13), (14) and (lT It is then shown that these may be converted to known forms in particular conditions. The case when both envelopes and absorbing media are Card 3/4 C) s/oq6/6o/uoo/o8/ol8/024 E194/E484 dr AUTHORs A Candidate of Technical Sciences ITLE: The Determinat ions of Irradiation Coefficients by tile Metho-1 of Light Modelling PERIODICALiTeploenergetika,. 1960, Nr b, pp 83-85 (USSR) AESTRACTs The method of light modelling has recently been extensively used in various countries to study processes of radiant exchange. The method depends on the identity of the laws of radiant energy transfer in the vi3ible spectrum and at various other wave lengths, The light modelling method can also be used to determine local and integral radiation coefficients between bodies. The mutual. surface of radiant exchange between two bodies of' arbitrary location is given by Eq (1). It is often difficult to determine the integral in this formula for bodies of arbitrary shape and so various kinds of integrator are used. The method of light modelling is very convenient, models of the bodies are made to appropriate scale, the surface of one of' them is made uniformly luminous and then measurements are made of the Card 1/3 light falling on the other body using Eq (2). Practical S/096/60/000/08/018/o24 E194/E484 The Determinations of Irradiation Coefficients by the Method of Light Modelling difficulties sometimes arise in making one of the bodir.s uniformly lum--'Lnous and in making measurements on the other if -it is of complicated shape. However, these difficulties may be overcom-a by employing the principles of congruency and additiveness of radiant fluxes and determining, by means of a light model, the irradiation coefficients for bodies of complicated configuration. The principles of the method are explained with reference to Fig 2 and Eq (7) and (8) are derived for the integral coefficients of the radiation between the bodies. In order to use these formulae it is necessary to know the irradiation coefficients from one plane to another for four possible combinations of variables. This presents no di 'fficulties with light modelling methods. The ser- 'uence of operations is described with reference to Fig 3. The method may also be used when the bod-jes are semi-tTansparent and the space between them is filled with a radiation absorbing Card 2/3 medium, Special features of 'Llic model in this case are s/oq6/6o/ooo/o8/ol8/O24 E194/E484 The Determinations of Irradiation Coefficients by the Method of Light Modelling discussed. It is also comparatively easy to det-ermine local and integral radiation from gas volumes of any shape which may be very useful in certain cases. The method des.;ribed has given good results and has been used in the Heat Exchangd'Laboratory of the Power Institute of the AS USSR to determine irradiation coefficients of ele~~t'i-c- furnaces, The shape and arrangement of the heating elements in the furnaces was very complicated but nevertheless the light modelling method gave satisfaztery results, There are 3 figures and 7 references 3 of which are Soviet and 4 English~ ASSOCIATIONs Energeticheskiy institut AN SSSR (Power Institute of the Academy cf S,:ietic-es USSR) Card 3/3 V 3/057/60/030/06/15/023 0 B012/B064 81594 AUTHORS: Filimonov, S. S., Khruetalev, B. A., Ad_ri=oy,_V._, N. TITLE: On the Theoretical Principles of the Method of the Two Radiometers /0 _-'r t PERIODICAL: Zhurnal tekhnicheskoy fiziki~ 1960, Vol. 30, No. 6, pp. 690-698 TEXT: V. S. Kocho (Ref. 1) introduced a method for the separate measure- ment of the radiation flow and the convective flow (method of two radio- meters). This was used in the investigation of the heat exchange in the Siemens-Martin furnaces (Ref. 1) and in the combustion chambers (Refs. 2P 3). In the present paper this method is analyzed. The heat absorption at the relevant place of heating is measured simultaneously by means of two radio- meters with different degrees of blackening Al, A2 9of the heat-absorbing e do n for the calculation of -Cz.43, The formulas (1) and (2) are writt n w the heating flow. It is assumed that the density Eincident of the incident radiation is equal for both radiometers. Furthermore, it is assumed that On the Theoretical Principles of the Method S/057/60/030/06/15/023 81591, of the Two Radiometers B012/BO64 tl'ti convective flows for both radiometers are equal and - q k~ Formula (5) is derived for E incident an d (6) for qk which are commonly used in calcula- tions. The constancy of E incidtint is maintained if the measuring surf&ze of the radiometer is considerably smaller than the over-all surface of the heat exchanger. In order to prove the accuracy of the assumption of the mutual independence of the convective and the radiation current the experi- mental investigation described herein was carried out. This was done by means of 3 radiometers* This proof was based on the idea that, if the assumption was right, any pair of radiometers would yield the same results as the other two pairs. The investigation showed that the hypothesis of '11-he mutual independence of the radiation flow and the convective flow in the medium boundary layer in the combustion chambers is in practice maintained with sufficient accuracy, The experiments have shown that by the method of two radiometers and by fulfilling the conditions A2 ,,~ 0.2 and Fradiometer AI Fbeating- Card 2/3 < 1 satisfactory results were obtained. qK 62 AUTHOR., TITLE: 17757 Vo96/61/00' 0,100210101014 B081/r"11+1 Adrianoy, V,.N.2 Candidate of Technical Sciences The Role of Scattering in Radiant Energy Exchange Processes PERIODICALs Teploenergetika, 1961, No.2, pp. 63-66 TEXT: Problems in the theory of radiant energy exchange lead to integral and integro-differential equations for which strict and accurate solutions are at present impossible. In order to simplify the problem, the assumption has been made that there is no scattering G'C radiation (i.e. that the body is a pure absorber)) and in the present paper an attempt is made to analyse the role of scattering in a plane parallel layer of a medium which attenuates radiation. It is assumed that the non-selective attenuating medium has thickness 6 and an attenuation coefficient k = a -* P, where a and p are respectively the coefficients of absorption and scattering. The temperature is 0 OK at all points and diffuse radiation currents El and E2 fall respectively on each side of the layer (Fig.1). For a solution of the problem the basic concepts of Schuster (Ref.2) and Schwarzschild (Ref-31 Card 115 87757 S/096/61/000/002/010/014 E081/E141 The Role of Scattel'ing in Radiant Energy Exchange Processes are used. Essentially, the method consists in dividing the radiation field in a plane layer into two discrete radiation currents flowing in opposite directions. This leads to the differential equations (1): LLE-+= Y-+kB+ + )(+ I E+ + R- dx 2 2 dB-= kE- F, - )L E- ~-X 2 2 where B+ and E- are the radiation currents in the sectionx of the layer; -y + and -X- are given by the integral equations: I+ (y) d c,3 S I- (y ) d c,3 +2 -it and 2 Jr ~ I+ 4-27r Card 2/5 cos y do cos Y dc,~ 67757 S/006/61/000/002/010/01)+ E081/Ell+l The Role of Scattering in Radiant Energy Exchange Processes and are coefficients which allow for the dispersion of intensity I in the radiation currents E+ and E-; y is the angle at which radiation falls on the elementary layer. In the present case, E+ and E- are diffuse in character to sufficient accuracy and X+ = X- = 2. Tho system of equations (1) then becomes (3) subject to the boundary conditions (4). The solution is given by Eqs (5) and (6), where a/k = Sc~ the Schuster criterion, and kb = Bu, the Buger criterion. The radiant energy flow vector is given by Eq.('?) and its divergence by Eq.(8). Eq.(9) expresses the transmission capacity D of the layer and the following equations give the value of D for th,~ limiting cases a = 0 and 0 = 0. Fig.2 shows D as a function of the Schuster (cL/k) and Buger (kb) criteria. Equations (10) and (11) refer respectively to the reflecting capacity H and the absorbing capacity A = 1 -(D + R) of the layer; the limiting values of each of these expressions for a = 0 and p = 0 are also given. The equations immediately above the table on page 65 are the radiational parameters for an optically infinitely dense layer Card 3/5 8775~V S/096/61/000/002/010/014 E081/E14l The Role of Scattering in Radiant Energy Exchange Processes (k6 cu ) ; the table itself gives the corresponding values of R and A for various values of the Schuster criterion a/k. The use of this limiting value of R for determining the Schuster criterion is explained, and the ratio (g .) of the absorbing capacity of the layer to its absorbing capacity with 0 = 0 is derived (Eq. (12)), The relationship of 6 to the Schuster criterion and the Buger criterion for absorption (W is shown in Fig-3- With increasing Buger criterion, the value ofof~ fails asymptotically to its minimum value given at the foot page 65. In practice the minimum value is reached for a6 = 4. The influence of scattering on the radiational heat exchange of a layer of medium contained between two walls is then considered. The medium has a temperature Tcp OK and the walls a temperature TeT OKI and degree of blackness AcT (Fig.4). The radiant flow to the walls is then given by Eq.03). Solving the equations for En~xp, and E-q, leads to Eq.(14) for E)t and to Eq.(15) for kFq I where EtiaLia; is the flow of energy falling on the walls; q_r Card 415 ..'7757 S/ 96/61/000/002/010/014 EO8l/El4l The Role of Scattering in Radiant Energy Exchange Processes E) is the effective flow emitted from the wall, and qjjyLj is ~he resulting radiant flow. In the latter equation7 the effect of scattering must be allowed for by introducing 9 from Fig-3 as a correction factor, and Fq.(15) then becomes (16). The equation shows that increasing the scattering coefficient p (at constant absorption a) decreases the radiant heat exchange to the walls, because g decreases with increasing scattering. There are 4 figures and 5 references: 3 Soviet and 2 non-Soviet. ASSOCIATION: Energeticheskiy institut AN SSSR (Power Engineering Institute, AS USSR) Card 515 POLYAIC, G.L.; ADRIANOV,J.~~. _ - -.- ------ Algebra of resolvent f1mces in radiant en'Unge. -Tnzh,-fiz, zhure no#7:70-77 JI t62, (MIRA 15:7) 1. Energeticheskiy institut Uleni, G,M,Krzhizhanovskogoj, Moskvas (Heat-Radiation and absorption) "Umductive and convective ~.,eut transfer wit!~ ra,'iation." report submitted for 2nd All-Union Conf on Heat --',: Transfer, Mlinsk, 4-12 I may 1964. Krzhizlianovskiy Power Inst. ACCESSION FR: AP4038664 S/0170/61+/000/004/0074/0080 ;.AUTHORt Adrianov, V. N.; Polyak, G. L. TITLEt Differential methods of studying radiative heat transfer SOURCE: Inzhotiorno-fizichaskiy zhurnalellno. 4, 196-4, 74-80 TOPIC TAGS: l"Ladiativo heat transfer, heat exchange, heat radiation ABSTRACT: The article reNdpwsdifforential mrthods of studying radiative heat transfer which because of thoir rolativo simplicity have opc~cd up now pcrsibili- 0S. Ti o clovelopiziont of thoso mo Lhods, is presented in chronological order, tho rnmos of tho originatonn, are riven, ar..d tho mothods are compared. Because '.~e difforonti,,Ll mothods are basod on appro.-zimato differential equations of hoat radiati-on, t'noy have undergone constant rafinc-mont, and this appears to be the direction in which ahoy viLL continue to" dovolop in the Aiture. Orig. art. hast 16 fonrulas. ASSIOCIATION: Enex-gaticheakiy inatitut,ira. G. M. Krzhizhanovakogo, Yoccov (Inatitute'of Power Engineering) Card ACCESSION Mi AP4038664 SUBETTEDi 12.Feb63 ..DATE ACQ: 29MaY64 SUB CODE: TD NO REF SOVt 008 Card ENCL 1 00 OTHEM 008 P, OlAOV r,f -L Ul-ZIEWT1 1-1 fKidAf I 4,C_r_'J'J-QQ ILVI "~0111101,, G, 0, M", AT J, T J i 0 R Aorlo~.-,ov, V. Ii. r-", 1) 1.:~ 1) '11) C, V s ORG, Powor 11'st'lLuto I'l, R13,11 n t1 Vo- CODdUCtIVe and J'f,dj.oLjVe-Ccj)v,3Ct -!Vo 1jell' tronsfor S 0 U 11 C F, : 'J'eplo- I massoporeno.,3. t. IT- Teplo- 1 Pri ,Vz01M0CJVY3~,V11 tol s potekaigi zhiokostey i [~-_azov (Heat and moss transfc IV, 2: Ifeet tind nf?ss transfor in the interaction of bodioej with liquid Isnd Utis flow3). Eiinsk, Nauka i tokhnikq, 1965, n-2-102 ITOPIC, 'PAGS: rooliltivo Mat trtn!3for, conductive hopt transfer A,13 " 1'F1 A C T : The ai-Liole first considers rtidicitive-Conductive heal. itrennfor In a flat layer of an absorptive and beat conductive medium. The energy equation for ra6iative-conductivo heat transfor has the following form: d1v q, + div % = 0. (1) For a flat layer (the one-dimensional problem) Integration of Eq. 1 gives the following expression: Card 1/3- ACC NR- AT60069% + q - const. (2) dx Results of the subsequent calculation show that the solution given bare aErees sufficlently well with prevlous literature data and that It Is sufficiently accurate to a second approximation. At tbo same time, tbi solution Is not 11mited witl) respect Lo the wall temperatures and to tb emission obaracteristics of the system. The article next considers radiative-convective heat transfer in flow of the medium from the walls of a channel. Here, the energy equation for an elementary layerj, evaluating the velocity and the temperature flux at their statistically average valies, is written In the following fon-n: dl~ dr au (r-T~') = 0. (20) dx The boundary conditions are as follows: X Ct 00 T' . A, I + + Tr T" TW The article concludes with the following expression which can be used Card ACC NR, ATU)o6qoh, --.)e~ilvcid dep,eo of approximation in onoay,,~Iq and calci3lations of rfidlative-convective heat tvansfer Dr0Cq.331-'.'J-' (34 Orig. art. liss: A formulas and 1~ flFui,os. SUB CODE: 201 SUBM DATE: 09Nov65/ ORIG REF! 010`1/ OTH PHY: 0,07 Card 1/1 vet 1, 26395,-56 EP*.c(,,'-2/EW-f(1)/LTc,(f)Awc;(m) v-;vi- - ACC NR: AP600715-3, SOURCE CODE: UIR/01~0/66/010/002/0264/0267~ iAUTHORS--. Adrianov, V. N.; Yolyakt G. L. 'ORG: Moscow Power Institute imeni G. M. Krzhizhanovsk& _(Energeticheakiy in titut)l TITLE. On the differential.methoa for investigatinf,, radiative heat transfer ISOURCE: Inzhenerno-fizicheskiy zhurnal, v. 10, no. 2, 1966, 264-267 T3?1C UGB: ralliative heat tz-ansfer., optic t1hic7kness, integ:al eqiation ABSTRACT: This article is an answer to P. K. Konakov (whose letter was published in IFZhi 8t NO. 3, 1965) who criticized the authors' previous publication (IFZh, 7,~ Vo- 4, 1964). Three points brought out by Konakov are refuted. First, according to Konakov, the formulation of boundary conditionsrelating the radiation flux on the wall q to the wall temperature according to the diffusion method 'is wrong. Tile. authors show that this method has been generally accepted throughout the world as a,' proper technique and that Konakov's approach can lead to the erroneoixn conclusion that the equation (W)114 a07 follows from conditions of local. thermodynamic equilibrium. Second, the authors UDC,-,536-3. L 26395-66 '-.ACC NR: -AP6007193 show that Konakov uses Buger's law but ignores radiation interaction with the medium over a photon mean free path. Thirdy Xonakov claims that the radiation diffusion coefficient equals o/4k instead of c/3k. lhe authors show that this is true only for optically thin gases where k ~4< 1. Fina.11y, KonakovIB attack on Hottel's nathemiatical analysis as "not clear" is refuted as unfounded, .0rig. art.. has: 3 formulas and I figure. SUB CODE:. 20/ SUBM DATEt 31Jul65/ ORIG REP:' 010/ OTH Mv: 006 Card 21,~,... A AT SOURC 6029316 9 CODE: UR/0000/66/000/000/0134/0-15( AUTHOR: Adrianov, Vo No; 'Khrustalev, Be Ao; Kolchenogova, 1. P. 5 QRG: none ,~ITILE: Radiative-convective heat transfer of a high temperature-flow of gas in a channel SOURCE: Moscow. Energeticheskiy institut. Teploobmen v elementakh energet:icheskikh ustanovok Heat exchange in power installation units). Moscow, Izd-vo Nauka, 1966, 34-150 iTOPIC TAGS: radiative heat transfer, convective heat transfer, gas flow ABSTRACT-. The article is devoted to a combined theoretical and experimental 'treatment of the problem of complex heat transfer between a high temperature gas flaw land the cold surface of a channel. The theoretical analysis arrives at a method for 'determining the quantities which enter into the dimensionless relationship describing 'the process. For the experimental investigation, a special apparatus was bui1t to ,!s tudy radiative-convective heat transfer during the movr.-ment of the products of the co7:bustion of a gaseous fuel in cylindrical chaannals. The article gives a diagram of 4. ,uhe experimental apparatus. Four series of experiments were carried out in channels of ,different diameters. The experimental results are exhibited in extended tables. On 1 Card ACI~-14 D !the basis of the experimental data, the f ollowing relationship -,;as arrived att 0 = exp (- Ayll + (I - y)"'(16,3Re-wo" - 70)1