Projects / Programmes
Original combined multiphase model of steam explosion premixing phase
Code |
Science |
Field |
Subfield |
2.13.01 |
Engineering sciences and technologies |
Process engineering |
Multi-phase systems |
Code |
Science |
Field |
P240 |
Natural sciences and mathematics |
Gases, fluid dynamics, plasmas |
multiphase flow, multiphase model, simulation, steam explosion
Researchers (5)
no. |
Code |
Name and surname |
Research area |
Role |
Period |
No. of publicationsNo. of publications |
1. |
21538 |
PhD Robert Bergant |
Energy engineering |
Researcher |
2002 - 2004 |
42 |
2. |
15653 |
PhD Gregor Černe |
Systems and cybernetics |
Researcher |
2001 - 2002 |
51 |
3. |
15816 |
PhD Andrej Horvat |
Energy engineering |
Researcher |
2002 |
52 |
4. |
16435 |
PhD Boštjan Končar |
Energy engineering |
Researcher |
2003 - 2004 |
367 |
5. |
14572 |
PhD Matjaž Leskovar |
Energy engineering |
Head |
2002 - 2004 |
435 |
Organisations (1)
no. |
Code |
Research organisation |
City |
Registration number |
No. of publicationsNo. of publications |
1. |
0106 |
Jožef Stefan Institute |
Ljubljana |
5051606000 |
90,753 |
Abstract
In multiphase flow different phases distributions may occur, which can not be adequately modeled neither solely with free surface flow models nor solely with multiphase flow models. Such a phases distribution occurs for example in isothermal steam explosion premixing experiments, where dispersed spheres penetrate into water and the water-air surface remains sharp. A common practice in isothermal premixing experiments modeling is to treat all three phases involved: the water, the air and the spheres phase, equally with a multiphase flow model. So the water-air surface is treated as a dispersed flow of air bubbles in water or water droplets in air, what is a physically wrong picture and because of very stiff interface coupling terms also a numerically not easy solvable task. Our idea therefore is to treat the isothermal premixing process with an original combined multiphase model, where the dispersed spheres are treated as usually with a multiphase flow model, whereas the water and air phases, which remain separated with a sharp interface, are treated with a free surface model.
The purpose of the project is to develop an original combined multiphase model suited for modeling of all these phases distributions, where some phases are separated with a sharp interface, whereas the other phases are dispersed. The developed combined multiphase model will be validated on isothermal steam explosion premixing experiments.