fnctId=thesis,fnctNo=196
Integrated Experimental and Computational Approach of Flow in a Stirred Tank
- 링크
- 작성자
- 관리자
- 저자
- H.S. Yoon, K.V. Sharp, K. KarM.Y. Ha, S. Balachandar, R.J. Adrian, D.F. Hill,
- 발행사항
- 발행일
- DEC.2001
- 저널명
- Chemical Engineering Science
- 국문초록
- 영문초록
- The stirred tank reactor is one of the most commonly used devices in industry for achieving mixing and reaction. We consider a combined experimental/computational approach for the simulation of flow inside a stirred tank. Two sets of experiments are performed to measure the velocity field in the neighborhood of the impeller. The first set of PIV measurements is on six different r?z planes phase locked at 0°, 10°, 20°, 30°, 40° and 50° to the blade location. The second set of PIV measurements is on a curved θ?z plane whose radial location is just outside the impeller blade tip radius. Measurements indicate that the impeller-induced flow is dominated by three flow components: a circumferential flow, a tangential jet and pairs of tip vortices. A simple theoretical model is developed for each flow component and their superposition is observed to provide a good description of the impeller-induced flow. The theoretical model is used as a velocity boundary condition for numerical simulation. The impeller-induced boundary condition is fully three dimensional, an important aspect that significantly enriches the mathematical representation of the primary source of motion. The results of two- and three-dimensional simulations are compared with measurements in the interior of the tank.
- 일반텍스트
- 첨부파일