modelling a low pressure gas in a cylinder for thermal analysis

[mpvnaresh]

hello

I want to study the temperature variation in a very low pressure gas where radiation is the major mode of heat transfer and convection can be neglected.in the cylinder heat is continuously emitted by a hot plate which is placed at one end in the cylinder.how can i model this nx nastran solver in thermal environment.?

 

[racookpe1978]

Start by defining numbers. Values. Sizes, pressures, temperatures, distances, areas. Know estimates of the energy going into the "hot plate" Or initial temperature of the "hot plate" when placed inside the gas-tight chamber by "something"

THEN solve it roughly by hand.

And don't "ignore" convection! You don't "know" yet if anything can be ignored! (Unless this is a homework assignment.)

THEN show us how you have entered your estimates into the FEA program.

Garbage in = garbage out. Only faster.