Damu, C and Moudghalya, S and Nerale, MM and Panda, D and Prasad, R and Behera, U and Reddy, BNS (2024) Numerical investigation on non-linear streaming effects in a two-stage coaxial pulse tube cryocooler. In: Physics of Fluids, 36 (1).
|
PDF
phy_flu_36_1_2024.pdf - Published Version Download (4MB) | Preview |
Abstract
Stirling pulse tube cryocoolers (PTC) are widely used in aerospace applications for the cooling of infrared sensors and for filtering background thermal noise in the astro-imaging devices, etc. Present investigation aims to use numerical methods to demonstrate the nonlinear fluid flow, heat transfer, and vortex generation phenomena in a two-stage coaxial type inertance pulse tube cryocooler. The numerical simulation is conducted using commercially available Fluent® code for both single-stage and multi-stage configurations to show nonlinear processes with varying heat load conditions. It has been noticed that the width of the vortex produced inside the pulse tube grows with an increase in heat load capacity. This undesirable flow conditions yields an adverse effect in the cooling behavior and reduces overall performance of cryocooler with higher heat load. Additionally, streamlines, stream function, pressure and temperature variation plots are given for both stages with different heat load capacity to substantiate our results. © 2024 Author(s).
| Item Type: | Journal Article |
|---|---|
| Publication: | Physics of Fluids |
| Publisher: | American Institute of Physics Inc. |
| Additional Information: | The copyright for this article belongs to Author. |
| Keywords: | Aerospace applications; Cooling systems; Cryogenic equipment; Infrared detectors; Numerical methods; Thermal load; Vortex flow, Fluid-flow; Imaging device; Infra-red sensor; Infrared sensor; Load capacity; Non linear; Nonlinear fluids; Numerical investigations; Pulse tube cryocoolers; Stirling pulse tube cryocooler, Cooling |
| Department/Centre: | Division of Physical & Mathematical Sciences > Centre for Cryogenic Technology |
| Date Deposited: | 04 Mar 2024 04:41 |
| Last Modified: | 04 Mar 2024 04:41 |
| URI: | https://eprints.iisc.ac.in/id/eprint/83973 |
Actions (login required)
 |
View Item |
