Numerical predictions of local entropy generation for an impinging jet

Conference · Sat Apr 01 04:00:00 EST 1989

OSTI ID:5205600

White, M D; Drost, M K

Predictions of local volumetric entropy generation rates were made numerically for the convective heat transfer problems of a fluid jet impinging on isothermal and constant heat flux surfaces. The solution technique yielded a scalar field of volumetric entropy generation rates that extends over the fluid domain. For isotropic and Newtonian fluids local entropy generation rates, that stem from the irreversible phenomena of heat transfer across a finite temperature difference and viscous fluid flow, may be computed from fields of temperature, local temperature gradients, and the local viscous dissipation function. The primary points of interest for this problem were to investigate the surface heat transfer rates as a function of inlet jet velocities, and the apportionment between viscous and thermal source entropy generation. The problem investigated was restricted to two-dimensional slot jet flow with two fluids, helium and glycerin. 12 refs., 9 figs., 4 tabs.

• Research Organization: Pacific Northwest Lab., Richland, WA (USA)
• Sponsoring Organization: DOE/CE
• DOE Contract Number: AC06-76RL01830
• OSTI ID: 5205600
• Report Number(s): PNL-SA-16718; CONF-891208--28; ON: DE90004671
• Country of Publication: United States
• Language: English

Related Subjects

42 ENGINEERING
420400* -- Engineering-- Heat Transfer & Fluid Flow
COMPUTER CODES
ENERGY TRANSFER
ENTROPY
FLUID FLOW
HEAT FLUX
HEAT TRANSFER
JETS
MASS TRANSFER
NUMERICAL SOLUTION
PHYSICAL PROPERTIES
T CODES
THERMODYNAMIC PROPERTIES
THERMODYNAMICS