Theses and Dissertations
Issuing Body
Mississippi State University
Advisor
Thompson, David S.
Committee Member
Luke, Edward
Committee Member
Walters, Keith
Date of Degree
12-9-2006
Document Type
Graduate Thesis - Open Access
Major
Aerospace Engineering
Degree Name
Master of Science
College
James Worth Bagley College of Engineering
Department
Department of Aerospace Engineering
Abstract
Computational investigations were carried out to evaluate the effectiveness and usability of hybrid RANS/LES techniques for predicting the unsteady separated flow over wings with ice accretion. RANS and hybrid RANS/LES computations were performed using the viscous flow solver CHEM with the SST turbulence model. Two configurations were considered during the study: an extruded wing with a glaze-ice shape and a swept wing with a simulated glaze-ice accretion. Hybrid RANS/LES results, in general, predict a less active shear layer ``roll up' than seen in the experimental data. Qualitative improvements are seen in the hybrid RANS/LES results over corresponding RANS results. The extruded wing results show that the CHEM hybrid RANS/LES results are similar to the AVUS DES results. The use of preconditioning and a different turbulent model in CHEM showed a slight improvement in results.
URI
https://hdl.handle.net/11668/17226
Recommended Citation
Mankada Covilakom, Mithun Varma, "Rans And Hybrid Rans/Les Computations For Three-Dimensional Wings With Ice Accretion" (2006). Theses and Dissertations. 3716.
https://scholarsjunction.msstate.edu/td/3716
Comments
CFD||DES||AIRCRAFT ICING||HYBRID RANS/LES