HEAT TRANSFER MEASUREMENTS IN NEUTRALLY BUOYANT SUSPENSIONS IN THE INERTIAL REGIME

A. P. Merin, V. Srinivasan

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

The present study experimentally investigates the behavior of thermal diffusivity of a sheared granular suspension with neutrally buoyant particles. The study uses a Taylor-Couette cell with a rotating outer cylinder and fixed inner cylinder to create a uniform shear flow while suppressing fluid turbulence for lower Reynolds numbers. Spherical PMMA beads of 2 mm were used to make a suspension with a glycerol-water mixture as the base fluid. For a small fixed volume fraction of 5%, changing the rotation speed, and therefore the shear rate, particle Reynolds numbers are varied from 0-30, going from Stokes flow to timedependent flow with increasing inertia. We study the thermal diffusivity of the suspension by examining the decay of the inner wall temperature after a sharp thermal pulse. The thermal diffusivity is extracted from the observed temperature decay using a model for one-dimensional diffusion into the particle suspension. A non-monotonic behavior of thermal diffusivity with volume fraction is observed.

Original languageEnglish (US)
Title of host publicationProceedings of ASME 2022 Heat Transfer Summer Conference, HT 2022
PublisherAmerican Society of Mechanical Engineers (ASME)
ISBN (Electronic)9780791885796
DOIs
StatePublished - 2022
EventASME 2022 Heat Transfer Summer Conference, HT 2022 - Philadelphia, United States
Duration: Jul 11 2022Jul 13 2022

Publication series

NameProceedings of ASME 2022 Heat Transfer Summer Conference, HT 2022

Conference

ConferenceASME 2022 Heat Transfer Summer Conference, HT 2022
Country/TerritoryUnited States
CityPhiladelphia
Period7/11/227/13/22

Bibliographical note

Publisher Copyright:
Copyright © 2022 by ASME.

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