Irradition to base of cylindric gray gas volume

In summary: The graybody radiation is the radiation from the atoms and molecules in an object, and is mostly in the IR range.
  • #1
M_1
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TL;DR Summary
What is the irradiation [W/m2] to the base of a cylinder with gray gas?
Anyone who has an idea for how to calculate the irradition [W/m2] to the base of a cylinder with radius R, height H, absorption coefficient k, and temperature T? I've looked at the approach with mean beam length by Hottel but cannot figure out what to do when it is the base of the cylinder that is the area of interest. Any help would be very much appreciated.
 
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  • #2
M_1 said:
Summary:: What is the irradiation [W/m2] to the base of a cylinder with gray gas?

Anyone who has an idea for how to calculate the irradition [W/m2] to the base of a cylinder with radius R, height H, absorption coefficient k, and temperature T? I've looked at the approach with mean beam length by Hottel but cannot figure out what to do when it is the base of the cylinder that is the area of interest. Any help would be very much appreciated.
Sorry, what is "irradition"? Do you mean irradiation? If so, what sort of radiation? Light, particles, other?

And if light, is the issue the multiple path lengths that are taken from the illumination point at the top of the cone down to the flat base area? But you seem to be asking about a cylinder instead of a cone -- is the light collimated when entering the top surface of the cylinder?

Can you attach a sketch or figure of the problem?
 
  • #3
Thanks for answer and sorry for not being clear. I mean a gray gas that emits thermal radiation. So the thermal radiation is created inside the cylinder and I need to figure out the irradiation hitting the base of the cylinder. So there is no collimated light and no light entering the cylinder.
 
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  • #4
What exactly is "gray gas"? How transparent it it to IR? What is the mechanism for this gas emitting IR radiation?
 
  • #5
The gray gas is a fire. So the emitting parts are mainly CO2, H2O and graybody radiation from soot.
 

1. What is "Irradiation to base of cylindrical gray gas volume"?

"Irradiation to base of cylindrical gray gas volume" refers to the process of exposing the base of a cylindrical volume of gas to radiation, which is a form of energy that can cause changes in the gas molecules.

2. What is the purpose of irradiating the base of a cylindrical gray gas volume?

The purpose of this process is to study the effects of radiation on the gas molecules at the base of the cylinder. This can provide valuable information about the behavior and properties of the gas.

3. How is the irradiation process carried out?

The irradiation process involves directing a beam of radiation towards the base of the cylindrical gas volume. This can be done using various methods, such as using a radiation source or a particle accelerator.

4. What types of radiation can be used for irradiation?

There are various types of radiation that can be used for irradiation, including gamma rays, X-rays, and electron beams. The type of radiation used will depend on the specific goals of the experiment and the properties of the gas being studied.

5. What are the potential applications of studying irradiation to the base of cylindrical gray gas volumes?

Studying the effects of radiation on gas molecules can have various applications, such as in the fields of nuclear energy, environmental science, and materials science. It can also help in understanding the behavior of gases in extreme conditions, such as in outer space or in nuclear reactors.

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