Development of Variable Space Resolution Hybrid Simulation Technique for Multi-Scale prediction of Multi-Phase Flows
| Project/Area Number |
15360095
|
|---|
| Research Category |
Grant-in-Aid for Scientific Research (B)
|
| Allocation Type | Single-year Grants |
|---|
| Section | 一般 |
|---|
| Research Field |
Fluid engineering
|
|---|
| Research Institution | Kobe University |
|---|
Principal Investigator |
TOMIYAMA Akio Kobe University, Faculty of Engineering, Professor, 工学部, 教授 (30211402)
|
|---|
| Co-Investigator(Kenkyū-buntansha) |
HOSOKAWA Shigeo Kobe University, Graduate School of Sci.& Tech., Associate Professor, 自然科学研究科, 助教授 (10252793)
|
|---|
| Project Period (FY) |
2003 – 2005
|
| Project Status |
Completed (Fiscal Year 2005)
|
| Budget Amount *help |
¥15,300,000 (Direct Cost: ¥15,300,000)
Fiscal Year 2005: ¥3,300,000 (Direct Cost: ¥3,300,000)
Fiscal Year 2004: ¥3,500,000 (Direct Cost: ¥3,500,000)
Fiscal Year 2003: ¥8,500,000 (Direct Cost: ¥8,500,000)
|
|---|
| Keywords | Interface Tracking Method / Particle Tracking Method / Multi-Fluid Model / Hybrid Simulation / Multi-Phase Flow / Multi-Scale / 相関式 |
|---|
| Research Abstract |
A hybrid CMFD (computational multi-fluid dynamics) method is proposed for the prediction of multiphase flows including large-scale interface, poly-dispersed bubbles and/or drops. The method is the hybrid integration of an accurate interface tracking method (ITM), three kinds of bubble tracking methods and an averaging method based on a multi-fluid model (MFM). The integration enables us (1)to cover a wide range of d^*=d/Δx, where d is the particle diameter and Ax the grid size, and (2)to perform various kinds of multiphase CFD such as standard interface tracking simulation, bubble/drop tracking simulation, multi-fluid simulations, and hybrid simulations using an arbitrary combination of ITM, BTM and MFM. The developed method can, therefore, be regarded as a multipurpose multi-scale multiphase CFD method. The field equations, constitutive equations and numerical solution algorithms of the proposed method are described in detail in this report. A poly-dispersed air-water bubbly flow and several bubble plumes in a small open vessel are simulated using the proposed hybrid method to demonstrate its potential.
|
Report
(4 results)
Research Products
(26 results)
