Resumen de Effects of flow control on flow past bluff bodies
The aim of this Ph.D. thesis, "Effects of flow control on flow past bluffbodies" is to study and analyzs the effects of Flow Control on various aspects and properbes offlow past bluff bodles. Flow control techniques are presenUyresearched and studled across the wortd to gauge the1r effectiveness In altenng flow properties and partems In different flow scenanos The lnspiration for the present work is derivad from automobíle lndustry, as analyzmg the flow over backward step and inclinad step shall help in understandlng the charactenstics of the rear veh1cle wake. Since a considerable percentage of the energy needed to propel the ve hiele Is lss1pated by the vortic1ty generaled in the rear of the ve hiele, hence it is of utmost im portance to understand the properties of the wake. In the present study various possibilities were e>ip lored for application and exam lne effectiveness of active flow control techniques in bluff bodles to increase the aerodynam le efflclency. The prlm ary alm of the study Is to reduce the drag acting on bluff bodies bydetermlnlng an effectíve active flow control technlque and configuratlon Two dlfferent kinds of Active Flow Control techniques ha ve been usad in th1s thesis namely, "Zero Net Mass Flow Actuator" and "Fluidic Actuator" The charactensbcs of laminar and turbulent boundary layer were analyzsd and the effectiveness of flow control m delaymg the detachment of the boundary layer was analyzsd. Numerical simulation programs were developed in C language for simulatlng various cases in the thesis anda 30 LES turbulence modellng finita volume code was developed usmg Smagorinsky-Lillymodel in C language for the simulating the flow over backward step in turbulence regime. All the numerical símulatlon codas were valldated with previous research works. The lhesls Is dl111ded into five chaplers analyzing flow over square cylinder, backward step and incllned step geometries in 20 and 30 In laminar and turbulent reg1mes Publlcalions: · 'A Numerical ln'IA3stigation ofwake and miiong layer mteractlons of Flow pasta Square Cyllnder", Mushyam , Aditya el al (lmpact Factor 1.949) http://llnk.s pringer.com/article/10.1007/s1 1012-016-0400-8 ¿'A Numerical lnwstlgation of Laminar flow 01.er a Backward faclng lnclined step", Meccan1ca (2016), Mushyam, Ad1tya et al Volume 51 Number 8;1739-176, ISSN 0025-6455, DOI 10.1007/s11012-015·0335-5. (lmpact Factor 1 949) ¿' AciJ1.e Flow Control on Laminar ftow overa Backward facmg step", M.ishyam, Aditya et al . Joumal of Physics-Conference Seri es , ICM-Square 2015, Volume 633, Conference 1. httpJ/iopsc1ence.iop.org/artlclel10.1088/17 42-6596/633/1/01211 O "'A Numerical Simulaoon of Flu1d-Structure lnteracbon tor ftow through valves of a hermetlc compressor with lmmersed Boundary Method." (2012). Mushyam, Adltya el al., lnl.ematlonal Compres sor Englneenng Conference. Paper 2139 http://docs.llb.purdue.edu/lcec/2139.
In the process of Submisslon ¿"Effects of Acti'IA3 flow control on flow pastan lnclíned Backward facing step¿ ¿"30-Flow over an Backward faclng step with Active ftow control" (In Preparation) Lloc
