2-DIMENSIONAL INVERSE PROBLEM IN ESTIMATING HEAT FLUXES OF AN ENCLOSURE WITH UNKNOWN INTERNAL HEAT-SOURCES

被引:253
作者
HUANG, CH
WU, JY
机构
[1] Department of Naval Architecture and Marine Engineering, National Cheng Kung University, Tainan
关键词
D O I
10.1063/1.357118
中图分类号
O59 [应用物理学];
学科分类号
摘要
The methodology in estimating the unknown temporal and spatial variation of inside heat fluxes of a heat-generated enclosure is derived by using the conjugate gradient method in a two-dimensional inverse problem. The advantage of the conjugate gradient method is that there is no need to assume a specific functional form for the unknown quantities beforehand, since the solution automatically determines the functional form over the domains specified. Such a technique can be applied to determine the internal wall heat fluxes acting on the inner and upper surfaces in the cylinder of an internal combustion engine, simultaneously, from the knowledge of transient temperature measurements taken inside the cylinder block and head, respectively, which is discussed in detail. The other application is the determination of inside heat fluxes of a nuclear fuel rod. Once wall heat fluxes inside the cylinder are determined, the exhaust heat produced by the cylinder head and block can be calculated. Furthermore, the cooling system for the cylinder can be established from the knowledge of heat transfer rate to it to avoid crack damage.
引用
收藏
页码:133 / 141
页数:9
相关论文
共 14 条
[1]  
Alifanov O. M., 1975, Journal of Engineering Physics, V29, P934, DOI 10.1007/BF00860643
[2]  
ALIFANOV OM, 1981, J ENG PHYS, V41, P581
[3]  
ALKIDAS AC, 1987, ASME, V109, P193
[4]  
ALKIDAS AC, 1984, P S COMBUSTION MODEL
[5]  
[Anonymous], 1985, INVERSE HEAT CONDUCT
[6]   INVERSE PROBLEM OF DETERMINING THE UNKNOWN STRENGTH OF AN INTERNAL PLANE HEAT-SOURCE [J].
HUANG, CH ;
OZISIK, MN .
JOURNAL OF THE FRANKLIN INSTITUTE-ENGINEERING AND APPLIED MATHEMATICS, 1992, 329 (04) :751-764
[7]   CONJUGATE-GRADIENT METHOD FOR DETERMINING UNKNOWN CONTACT CONDUCTANCE DURING METAL CASTING [J].
HUANG, CH ;
OZISIK, MN ;
SAWAF, B .
INTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER, 1992, 35 (07) :1779-1786
[8]   INVERSE PROBLEM OF DETERMINING UNKNOWN WALL HEAT-FLUX IN LAMINAR-FLOW THROUGH A PARALLEL PLATE DUCT [J].
HUANG, CH ;
OZISIK, MN .
NUMERICAL HEAT TRANSFER PART A-APPLICATIONS, 1992, 21 (01) :55-70
[9]  
HUANG CH, 1993, 1993 ASME NAT HEAT T
[10]  
HUANG CH, 1993, 22ND INT THERM COND, P985