Inverse Determination of the Local Heat Transfer Coefficients for Nucleate Boiling on a Horizontal Cylinder

Abstract

This article treats the local heat transfer for nucleate pool boiling around the cylinder using the inverse heat conduction analysis. The physical model considers a half section of a cylinder with unknown surface temperature and heat flux density. The iterative regularization and the conjugate gradient methods are used for solving the inverse analysis. The local Nusselt number profiles for nucleate pool boiling are presented and analyzed for different electric heat. The mean Nusselt number estimated by IHCP is closed with the measured values. The results of IHCP are compared to those of Cornewell and Houston (1994), Stephan and Abdelsalam (1980) and Memory et al. (1995). The influence of the error of the measured temperatures and the error in placement of the thermocouples are studied.

Circumferential temperature distribution during nucleate pool boiling outside smooth and modified horizontal tubes

“…In the most general case, the conjugated heat transfer problem, where the thermal boundary condition on fluid side is unknown, should be solved [10]. On the other hand, Louahlia-Gualous et al [11] have developed an iterative procedure to solve the two dimensional inverse heat conduction problem. CTD as well as local heat flux density have been determined for different heat flux densities taken as a boundary condition at the inner surface of a cylinder.…”

Inverse problem of estimating time-dependent heat transfer coefficient with the network simulation method

“…Rainieri and Pagliarini [8] used data ÿltering applied to infrared thermographic measurements for the estimation of local heat transfer coe cient. Finally, Louahlia-Gualous et al [9] determined the local heat transfer coe cients for nucleate boiling on a horizontal cylinder.…”

Experimental and Numerical Studies of Evaporation Local Heat Transfer in Free Jet

“…In the previous work (Chen et al, 2001, Martin & Dulkravich, 1998, Louahlia-Gualous et al, 2003, Louahlia & El Omari, 2006, IHCP is used to estimate the thermal boundary conditions in various applications of science and engineering when direct measurements are difficult. IHCP could determine the precise results with numerical computations and simple instrumentation inside the wall.…”