TY - JOUR
T1 - Internal heat generation in a discrete heat source
T2 - Conjugate heat transfer analysis
AU - Bautista, O.
AU - Méndez, F.
N1 - Funding Information:
This work has been supported by a research grant no. 43010-Y of Consejo Nacional de Ciencia y Tecnología at Mexico.
PY - 2006/12
Y1 - 2006/12
N2 - In the present work, we conduct an asymptotic and numerical analysis for the cooling process of a discrete heat source, which is placed in a rectangular-channel laminar cooling flow. In our physical model, the heated strip is embedded in a substrate, generating continuously a uniform volumetric heat rate. We assume that this heat-generation mechanism is due to an electrical current in the heat source. Hence, heat losses to the cooling fluid and to the substrate material during this process are presented. The governing equations of the cooling flow and the participating solid are reduced to an integro-differential equation that predicts the temperature variations of the heat source. We show that the conjugate heat transfer process is controlled by a conjugate nondimensional parameter, here denoted by α, which determines the basic heat transfer regimes between the cooling flow and the discrete heat source.
AB - In the present work, we conduct an asymptotic and numerical analysis for the cooling process of a discrete heat source, which is placed in a rectangular-channel laminar cooling flow. In our physical model, the heated strip is embedded in a substrate, generating continuously a uniform volumetric heat rate. We assume that this heat-generation mechanism is due to an electrical current in the heat source. Hence, heat losses to the cooling fluid and to the substrate material during this process are presented. The governing equations of the cooling flow and the participating solid are reduced to an integro-differential equation that predicts the temperature variations of the heat source. We show that the conjugate heat transfer process is controlled by a conjugate nondimensional parameter, here denoted by α, which determines the basic heat transfer regimes between the cooling flow and the discrete heat source.
KW - Channel flow
KW - Discrete heat source
KW - Regular perturbation techniques
UR - http://www.scopus.com/inward/record.url?scp=33745259287&partnerID=8YFLogxK
U2 - 10.1016/j.applthermaleng.2006.03.018
DO - 10.1016/j.applthermaleng.2006.03.018
M3 - Artículo
SN - 1359-4311
VL - 26
SP - 2201
EP - 2208
JO - Applied Thermal Engineering
JF - Applied Thermal Engineering
IS - 17-18
ER -