Study on the flow field and structural stress field of the primary retarder considering the throttling characteristics of the valve
The valve plays an important role in the control of the filling rate ( q fill ) and braking characteristics of the hydrodynamic retarder (HR). However, the dynamic throttling characteristics of the valve were rarely considered in previous studies. Therefore, this paper considers the influence of the...
Saved in:
| Main Authors: | , , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
SAGE Publishing
2025-01-01
|
| Series: | Advances in Mechanical Engineering |
| Online Access: | https://doi.org/10.1177/16878132251314545 |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| _version_ | 1832593977890570240 |
|---|---|
| author | Huanhui Zhou Zilin Ran Hu Dai Weida Yang Xianwei Chen |
| author_facet | Huanhui Zhou Zilin Ran Hu Dai Weida Yang Xianwei Chen |
| author_sort | Huanhui Zhou |
| collection | DOAJ |
| description | The valve plays an important role in the control of the filling rate ( q fill ) and braking characteristics of the hydrodynamic retarder (HR). However, the dynamic throttling characteristics of the valve were rarely considered in previous studies. Therefore, this paper considers the influence of the external valve system (retarder valve) of HR on its flow field, structural field and braking characteristics. Firstly, numerical calculation and experimental verification are carried out on the flow passage model without inlet and outlet (Plan A), with inlet and outlet (Plan B) and with retarder valve (Plan C). After considering the throttling characteristics of the retarder valve, the maximum errors of the impeller rotational speed ( n ), q fill and braking torque ( T ) characteristic curves are 2.678% and 3.517%, respectively, and the average errors are 4.526% and 5.012%, respectively. Compared with the other two schemes, the average error and maximum error of HR have been greatly reduced. Then, this paper compares the differences between the three schemes from the perspective of flow field and structural field, and expounds the influence of retarder valve on the numerical calculation results of retarder from the internal mechanism. Finally, this paper discusses the influence of n, q fill and retarder valve opening on the calculation results of Scheme C. The results show that the opening of the valve port will seriously affect the flow rate at the inlet of HR, and the flow rate in the retarder valve will have a hysteresis effect on the circulation flow in the mainstream region of HR. The research method of this paper can provide reference for the numerical study of turbomachinery. |
| format | Article |
| id | doaj-art-15989d30b6bd4442a1d3779b30518f10 |
| institution | Kabale University |
| issn | 1687-8140 |
| language | English |
| publishDate | 2025-01-01 |
| publisher | SAGE Publishing |
| record_format | Article |
| series | Advances in Mechanical Engineering |
| spelling | doaj-art-15989d30b6bd4442a1d3779b30518f102025-01-20T07:03:31ZengSAGE PublishingAdvances in Mechanical Engineering1687-81402025-01-011710.1177/16878132251314545Study on the flow field and structural stress field of the primary retarder considering the throttling characteristics of the valveHuanhui Zhou0Zilin Ran1Hu Dai2Weida Yang3Xianwei Chen4Hangzhou Advance Gearbox Group Co., Ltd., Hangzhou, ChinaSchool of Mechatronics and Vehicle Engineering, Chongqing Jiaotong University, Chongqing, ChinaHangzhou Advance Gearbox Group Co., Ltd., Hangzhou, ChinaSchool of Mechatronics and Vehicle Engineering, Chongqing Jiaotong University, Chongqing, ChinaSchool of Mechatronics and Vehicle Engineering, Chongqing Jiaotong University, Chongqing, ChinaThe valve plays an important role in the control of the filling rate ( q fill ) and braking characteristics of the hydrodynamic retarder (HR). However, the dynamic throttling characteristics of the valve were rarely considered in previous studies. Therefore, this paper considers the influence of the external valve system (retarder valve) of HR on its flow field, structural field and braking characteristics. Firstly, numerical calculation and experimental verification are carried out on the flow passage model without inlet and outlet (Plan A), with inlet and outlet (Plan B) and with retarder valve (Plan C). After considering the throttling characteristics of the retarder valve, the maximum errors of the impeller rotational speed ( n ), q fill and braking torque ( T ) characteristic curves are 2.678% and 3.517%, respectively, and the average errors are 4.526% and 5.012%, respectively. Compared with the other two schemes, the average error and maximum error of HR have been greatly reduced. Then, this paper compares the differences between the three schemes from the perspective of flow field and structural field, and expounds the influence of retarder valve on the numerical calculation results of retarder from the internal mechanism. Finally, this paper discusses the influence of n, q fill and retarder valve opening on the calculation results of Scheme C. The results show that the opening of the valve port will seriously affect the flow rate at the inlet of HR, and the flow rate in the retarder valve will have a hysteresis effect on the circulation flow in the mainstream region of HR. The research method of this paper can provide reference for the numerical study of turbomachinery.https://doi.org/10.1177/16878132251314545 |
| spellingShingle | Huanhui Zhou Zilin Ran Hu Dai Weida Yang Xianwei Chen Study on the flow field and structural stress field of the primary retarder considering the throttling characteristics of the valve Advances in Mechanical Engineering |
| title | Study on the flow field and structural stress field of the primary retarder considering the throttling characteristics of the valve |
| title_full | Study on the flow field and structural stress field of the primary retarder considering the throttling characteristics of the valve |
| title_fullStr | Study on the flow field and structural stress field of the primary retarder considering the throttling characteristics of the valve |
| title_full_unstemmed | Study on the flow field and structural stress field of the primary retarder considering the throttling characteristics of the valve |
| title_short | Study on the flow field and structural stress field of the primary retarder considering the throttling characteristics of the valve |
| title_sort | study on the flow field and structural stress field of the primary retarder considering the throttling characteristics of the valve |
| url | https://doi.org/10.1177/16878132251314545 |
| work_keys_str_mv | AT huanhuizhou studyontheflowfieldandstructuralstressfieldoftheprimaryretarderconsideringthethrottlingcharacteristicsofthevalve AT zilinran studyontheflowfieldandstructuralstressfieldoftheprimaryretarderconsideringthethrottlingcharacteristicsofthevalve AT hudai studyontheflowfieldandstructuralstressfieldoftheprimaryretarderconsideringthethrottlingcharacteristicsofthevalve AT weidayang studyontheflowfieldandstructuralstressfieldoftheprimaryretarderconsideringthethrottlingcharacteristicsofthevalve AT xianweichen studyontheflowfieldandstructuralstressfieldoftheprimaryretarderconsideringthethrottlingcharacteristicsofthevalve |