UNSTEADY TRANSFER OF HEAT IN GASES.
TECHNION - ISRAEL INST OF TECH HAIFA
Pagination or Media Count:
A study is made of the changes of state and the motions which are produced in a thermally conducting viscous gas, initially resting in a uniform state, when the temperature of its plane boundary is rised or lowered. Evaluation of the temperature, pressure and density variations in the gas and of the velocity of the induced motion is made by linearizing the equations of momentum Navier-Stokes, continuity, energy and state, and solving with the aid of the Laplace transformation. The results include 1 formulas giving the variation with time of the heat-transfer rate and the pressure at the boundary, 2 as asymptotic solution giving the changes of state and the motion of the gas at large times, 3 a power-series solution for small times. Conclusions are drawn from these results regarding the physical properties of the unsteady heat transfer in a gas. Author