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Modeling of the operation of a disc pump with the wall roughness consideration 考虑壁面粗糙度的圆盘泵运行建模

Известия МГТУ "МАМИ" Pub Date : 2023-09-27 DOI: 10.17816/2074-0530-321862

Viacheslav A. Cheremushkin, Vladimir O. Lomakin

{"title":"Modeling of the operation of a disc pump with the wall roughness consideration","authors":"Viacheslav A. Cheremushkin, Vladimir O. Lomakin","doi":"10.17816/2074-0530-321862","DOIUrl":"https://doi.org/10.17816/2074-0530-321862","url":null,"abstract":"Background: at present, a small number of studies of disk pumps operating on a low-viscosity liquid have been conducted. In addition, among the existing works, numerical calculations are presented, which have a serious discrepancy with the experiments carried out. This article is devoted to numerical simulation of the operation of a disk pump on water, comparison of the calculation results with experimental data. Aims: to determine the factors affecting the convergence of the main characteristics with experimental data when performing CFD calculations on a low-viscosity liquid. Methods: in this paper, a numerical modeling method based on the solution of discrete analogs of the basic equations of hydrodynamics is used. To compare CFD calculations with the experiment, a test bench was created on which two configurations of the impeller were studied. Results: it is shown that for this type of dynamic machines, it is important to take into account the influence of the roughness of solid walls when modeling their operation on a low-viscosity liquid, since it has a significant effect on the characteristics of the disk pump. The obtained characteristics are compared with experimental data, as well as flow patterns in the flow part. Conclusions: based on the results of the article, it can be argued that taking into account roughness in numerical calculations of a dynamic pump has a positive effect on convergence with experimental data.","PeriodicalId":478242,"journal":{"name":"Известия МГТУ \"МАМИ\"","volume":"33 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-09-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135538570","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Development of operation algorithm of electric drive of an electric vehicle in urban cycle 城市循环电动汽车电驱动运行算法的开发

Известия МГТУ "МАМИ" Pub Date : 2023-09-27 DOI: 10.17816/2074-0530-321355

Egor M. Klimov, Anatoly M. Fironov, Ruslan A. Maleev, Sergey M. Zuev

{"title":"Development of operation algorithm of electric drive of an electric vehicle in urban cycle","authors":"Egor M. Klimov, Anatoly M. Fironov, Ruslan A. Maleev, Sergey M. Zuev","doi":"10.17816/2074-0530-321355","DOIUrl":"https://doi.org/10.17816/2074-0530-321355","url":null,"abstract":"BACKGROUND: Increasing energy efficiency of an electric vehicle is one of the most relevant issues at the current state of transport development. It is known that chemical current sources used in traction electric drive of vehicles have low specific power, low efficiency and high cost that makes the electric transport development difficult. AIMS: Making the choice of strategy of manufacturing of electric vehicle with batteries. METHODS: The mathematical models of various vehicle driving cycles, such as: the UNECE Regulation 83 urban cycle, NEDC, WLTC, JC08, EPA HWEET were used in the study that made possible to confirm adequacy of the developed structural model of the electric drive. RESULTS: The structural layout of the traction electric drive of an electric vehicle with combined energy source has been developed; the algorithm of its operation in the urban driving cycle has been defined. Electric transport efficiency was assessed during the study. The analysis showed that vehicles with solely chemical on-board energy sources do not have any prospects due to unsatisfactory technical properties and consumer attributes. Review of capacitors was performed in order to define the possibility of using them as energy source for next-generation vehicles. The study revealed sufficient advantages of capacitors in many respects. Analysis of vehicle motion in urban cycle was performed in order to develop the optimal design. The electric drive layout with a lithium-ion traction battery as the main energy source and a capacitor as the additional energy source was chosen. CONCLUSIONS: This solution makes it possible to develop the electric drive with optimal mass and dimensional parameters, to increase service life of energy storage and mileage without recharging of a vehicle. In addition, the combination of two electric energy accumulators and the developed algorithm of their operation makes it possible to achieve high efficiency of energy transferring.","PeriodicalId":478242,"journal":{"name":"Известия МГТУ \"МАМИ\"","volume":"89 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-09-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135538378","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

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