A Study on the Efficient Method for the Solution of the Saha Equation in the Numerical Simulation of Capillary Discharge
In the numerical simulation of capillary discharge for the Electrothermal (ET) or ET-chemical (ETC) launch system, one needs to solve the Saha equation to determine the composition of plasma for the transport coefficients. This would cause a relatively longer simulation runtime compared with convent...
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| Format: | Article |
| Language: | English |
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Wiley
2017-01-01
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| Series: | Advances in Mathematical Physics |
| Online Access: | http://dx.doi.org/10.1155/2017/6473234 |
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| author | Hengzhu Liu Cheng Wu Fengjiang An Shasha Liao |
| author_facet | Hengzhu Liu Cheng Wu Fengjiang An Shasha Liao |
| author_sort | Hengzhu Liu |
| collection | DOAJ |
| description | In the numerical simulation of capillary discharge for the Electrothermal (ET) or ET-chemical (ETC) launch system, one needs to solve the Saha equation to determine the composition of plasma for the transport coefficients. This would cause a relatively longer simulation runtime compared with conventional computational fluid dynamics problems. In this paper, the relatively difficult multidimensional problem of solving the Saha equation is transformed into a one-dimensional problem in the simulation of capillary discharge by constructing an iteration equation about temperature. A coefficient is introduced to ensure the convergence of this iteration equation. In order to improve the computational efficiency, this coefficient is further optimized and the methods of setting the iteration initial value dynamically are introduced. Several simulation tests are conducted to study the performance of these two methods. The results show that the simulation runtime could be significantly reduced with the methods presented in this paper. |
| format | Article |
| id | doaj-art-ea3bce09a26b405db187af06569e65f9 |
| institution | Kabale University |
| issn | 1687-9120 1687-9139 |
| language | English |
| publishDate | 2017-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | Advances in Mathematical Physics |
| spelling | doaj-art-ea3bce09a26b405db187af06569e65f92025-02-03T06:00:24ZengWileyAdvances in Mathematical Physics1687-91201687-91392017-01-01201710.1155/2017/64732346473234A Study on the Efficient Method for the Solution of the Saha Equation in the Numerical Simulation of Capillary DischargeHengzhu Liu0Cheng Wu1Fengjiang An2Shasha Liao3School of Mechatronical Engineering, Beijing Institute of Technology, Beijing 100081, ChinaState Key Laboratory of Explosion Science and Technology, Beijing Institute of Technology, Beijing 100081, ChinaState Key Laboratory of Explosion Science and Technology, Beijing Institute of Technology, Beijing 100081, ChinaState Key Laboratory of Explosion Science and Technology, Beijing Institute of Technology, Beijing 100081, ChinaIn the numerical simulation of capillary discharge for the Electrothermal (ET) or ET-chemical (ETC) launch system, one needs to solve the Saha equation to determine the composition of plasma for the transport coefficients. This would cause a relatively longer simulation runtime compared with conventional computational fluid dynamics problems. In this paper, the relatively difficult multidimensional problem of solving the Saha equation is transformed into a one-dimensional problem in the simulation of capillary discharge by constructing an iteration equation about temperature. A coefficient is introduced to ensure the convergence of this iteration equation. In order to improve the computational efficiency, this coefficient is further optimized and the methods of setting the iteration initial value dynamically are introduced. Several simulation tests are conducted to study the performance of these two methods. The results show that the simulation runtime could be significantly reduced with the methods presented in this paper.http://dx.doi.org/10.1155/2017/6473234 |
| spellingShingle | Hengzhu Liu Cheng Wu Fengjiang An Shasha Liao A Study on the Efficient Method for the Solution of the Saha Equation in the Numerical Simulation of Capillary Discharge Advances in Mathematical Physics |
| title | A Study on the Efficient Method for the Solution of the Saha Equation in the Numerical Simulation of Capillary Discharge |
| title_full | A Study on the Efficient Method for the Solution of the Saha Equation in the Numerical Simulation of Capillary Discharge |
| title_fullStr | A Study on the Efficient Method for the Solution of the Saha Equation in the Numerical Simulation of Capillary Discharge |
| title_full_unstemmed | A Study on the Efficient Method for the Solution of the Saha Equation in the Numerical Simulation of Capillary Discharge |
| title_short | A Study on the Efficient Method for the Solution of the Saha Equation in the Numerical Simulation of Capillary Discharge |
| title_sort | study on the efficient method for the solution of the saha equation in the numerical simulation of capillary discharge |
| url | http://dx.doi.org/10.1155/2017/6473234 |
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