Double Slot Jet Impingement Cooling of a Round Block

EasyChair Preprint 9200

Abstract

This study aims the investigation the effect of impinging of two slot jets on a round block positioned at various angles and aiming at the centre of the block. The cumulative effect of the fluid flow and heat transfer from two jets is studied numerically. RANS approximation is used for the discretized governing equations and the study considered Reynolds numbers of 6000 & 20000 which was defined on the diameter of the round block. The non-dimensional nozzle to block spacing (H/S) of 2 & 8 was analyzed. The fluid is considered as turbulent incompressible two-dimensional flow. The angular placing of the two jets was varied from 45o to 180o. For the present numerical study. As a methodology, heat transfer results obtained using various RANS turbulence models were analyzed with the experimental results from the previous studies to prescribe the best model. In addition, the investigative understanding of control parameters such as distance from the nozzle to round blocks, Reynolds number, curvature parameter (D/S), and  was discussed in detail. The maximum Nusselt number (NuD) was found to be the highest when slot jets were positioned at exactly opposite locations.

Keyphrases: CFD, Round block, heat transfer, jet cooling, turbulence modelling

@booklet{EasyChair:9200,
  author    = {Vikash Kumar Singh Chauhan},
  title     = {Double Slot Jet Impingement Cooling of a Round Block},
  howpublished = {EasyChair Preprint 9200},
  year      = {EasyChair, 2022}}