DNS and unsteady RANS for rotating machinery

Dnr:

SNIC 2017/1-159

Type:

SNAC Medium

Principal Investigator:

Valery Chernoray

Affiliation:

Chalmers tekniska högskola

Start Date:

2017-05-01

End Date:

2018-05-01

Primary Classification:

20306: Strömningsmekanik och akustik

Webpage:

http://www.chalmers.se/sv/projekt/Sidor/Experimental-and-numerical-study-of-a-rough-wall-boundary-layer.aspx

Allocation

Abstract

In this project we will do computational fluid dynamics simulations (CFD), using the Fluent and Star-CCM+ CFD tools. We will use the clusters for mainly two differet projects: 1-BYEFOULING project: Chalmers is a part of a big EU project (EU FP7). The main goal of BYEFOULING is to design, develop and upscale antifouling coatings with enhanced performance compared to current available products. The approach in BYEFOULING is to tackle the different stages of the biofouling process using innovative antifouling agents, covering surface-structured materials, protein adsorption inhibitors, quorum sensing inhibitors, natural biocides and microorganisms with antifouling properties. Chalmers responsibility as the WP6's leader is to predict drag reduction for BYEFOULING coatings. The drag reduction analysis will be performed by direct numerical simulations (DNS) and large eddy simulations (LES) of fluid flow on ship hulls. 2-Aero engine efficiency improvement: Commercial air transport is growing rapidly and is expected to increase by around 4.5% in terms of passenger kilometres over the next 20 years. To green aviation access to large volumes of liquid fuels with no or limited CO2 impact (bio-fuels) are needed. To limit the need for the earth’s resources, radical efficiency improvement is needed provided by the innovative heat exchanger concepts that will be demonstrated through this project. In this project novel aerodynamic and heat transfer designs will be studied with ANSYS CFD and optimization tools.