Abstract
The effects of an acoustic wave on the in- stabilities occurring in a lateral differentially heated cav- ity are investigated numerically. Linear stability results show that the acoustic wave affects significantly the in- stability characteristics of such a Hadley flow. Indeed, the soundfield is found to stabilizeboth two dimensional transverse stationary and three dimensional longitudinal oscillatoryinstabilitieswhich are the most critical modes affecting the buoyant convection in the fluid layer. Nev- ertheless, when stabilized by an acoustic wave, the 2D modes turn fromstationaryto oscillatory,withtheknown consequences of such a change on mass and heat trans- fer, especiallyinhorizontalBridgmancrystalgrowthpro- cess. Thesecondfeaturetobementionedisthatthelinear stabilitypredictsadestabilizationof3Dstationarymodes that in the absence of acousticwaves are known to be ex- cited at threshold values of the Grashof number highly above those of the two primary instabilities.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
