HiFi-TURB-DLR rounded step

Semi-confined flows

Underlying Flow Regime 3-36

Evaluation

The RANS simulations described in a previous section are compared and assessed to uDNS computation results preformed by UNIBG. The setup and results of this uDNS computation can be found under

Comparison of uDNS results with RANS results

Figure 3: Skin friction and pressure coefficient on the body wall. Solid line: uDNS, dashed line: SSGLRR- $\omega$ , dashdotted line: k- $\omega$

Non-dimensional quantities:

Pressure coefficient: ${c_{p}=2(p-p_{\infty }/(\rho _{\infty }U_{\infty }^{2}))}$

Skin-friction coefficient: ${c_{f}=2\tau _{w}/(\rho _{\infty }U_{\infty }^{2}))}$

with the wall pressure $p$ , the freestream pressure $p_{\infty }$ , the freestream density $\rho _{\infty }$ , the freestream velocity $U_{\infty }$ and the wall shear stress $\tau _{w}$ .