Comparisons Between Experimental and Numerical Studies on Laminar Flow with Tracer Transport

by Christian Forkel, Aachen Univ of Technology, Aachen, Germany,
Helmut Daniels, Aachen Univ of Technology, Aachen, Germany,
Jens Birkhölzer, Aachen Univ of Technology, Aachen, Germany,
Gerhard Rouvé, Aachen Univ of Technology, Aachen, Germany,



Document Type: Proceeding Paper

Part of: Hydraulic Engineering

Abstract:

In this paper we present an experimental and an accompanying numerical study of two- and three dimensional transient flow and tracer transport in complex flow systems at low Reynolds numbers. The physical experiment was carried out in an irregular wall-bounded domain with one inlet for water and tracer (Uranin) and one outlet. The tracer movement was taped by a CCD-camera, converted by a digital image processing technique and visualized with AVS. The numerical simulations were carried out with two-dimensional depth averaged and fully three-dimensional finite element codes for the incompressible Navier-Stokes equations (PASTIS-3D) and the transport equation. Comparisons between the experimental data and the numerical simulations were made. The results are in excellent agreement.

Subject Headings: Numerical analysis | Comparative studies | Probe instruments | Numerical models | Numerical methods | Laminar flow | Transient flow | Navier-Stokes equations

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