| # Overview |
| The concentricCylinders case simulates radiative heat transfer between two |
| concentric cylinders. The '-baffle' option in the 'Allrun' script introduces a |
| cylindrical baffle between the cylinders. |
|
|
| # Setup |
| + The case geometry includes the following diameters: inner cylinder = 0.2m; |
| outer cylinder = 1.0m; baffle = 0.6m. |
| + The temperatures of the inner and outer cylinders are Tin = 400K and Tout = |
| 800K, respectively. |
| + The emissivity of the cylinders and baffle is 0.5. |
|
|
| # Theoretical solution |
| The theoretical solutions for the net rate of radiative heat transfer, qrad, |
| are as follows. |
| + Without baffle: qrad = sigma*(Tout^4 - Tin^4)*pi/11 = 6218W. |
| + With baffle: qrad = sigma*(Tout^4 - Tin^4)*pi/16 = 4275W. |
|
|
| # Baffle |
| The 'thermalBaffle1D' boundary condition is used to model the baffle. The |
| thickness of the baffle is set to 2mm to approximate a thin (zero thickness) |
| baffle. |
|
|
