Back to Search
Start Over
Numerical modeling of turbulent flow in a rotating steeply curved U-shaped channel when the direction of the channel and the geometry of the inner wall are rotated
- Publication Year :
- 2022
- Publisher :
- СанкÑ-ÐеÑеÑбÑÑгÑкий полиÑÐµÑ Ð½Ð¸ÑеÑкий ÑнивеÑÑиÑÐµÑ ÐеÑÑа Ðеликого, 2022.
-
Abstract
- Тема вÑпÑÑкной квалиÑикаÑионной ÑабоÑÑ: «ЧиÑленное моделиÑование ÑÑÑбÑленÑного ÑеÑÐµÐ½Ð¸Ñ Ð²Ð¾ вÑаÑаÑÑемÑÑ ÐºÑÑÑоизогнÑÑом U-обÑазном канале пÑи ваÑÑиÑовании оÑиенÑаÑии канала и геомеÑÑии внÑÑÑенней ÑÑенки». ÐÐ°Ð½Ð½Ð°Ñ ÑабоÑа поÑвÑÑена ÑиÑÐ»ÐµÐ½Ð½Ð¾Ð¼Ñ Ð¸ÑÑÐ»ÐµÐ´Ð¾Ð²Ð°Ð½Ð¸Ñ ÑеÑÐµÐ½Ð¸Ñ Ð²Ð¾ вÑаÑаÑÑемÑÑ U-обÑазном канале Ñ Ð¾Ð¿ÑимизиÑованной ÑоÑмой внÑÑÑенней ÑÑенки пÑи ÑазлиÑной оÑиенÑаÑии плоÑкоÑÑи иÑкÑÐ¸Ð²Ð»ÐµÐ½Ð¸Ñ ÐºÐ°Ð½Ð°Ð»Ð° оÑноÑиÑелÑно оÑи вÑаÑениÑ. Ðа Ð²Ñ Ð¾Ð´Ð½Ð¾Ð¼ и вÑÑ Ð¾Ð´Ð½Ð¾Ð¼ ÑÑаÑÑÐºÐ°Ñ ÑеÑение канала квадÑаÑное. ÐÑделÑнÑе ÑаÑÑеÑÑ ÑопоÑÑавиÑелÑной напÑавленноÑÑи пÑоводилиÑÑ Ñакже Ð´Ð»Ñ ÑлÑÑÐ°Ñ ÐºÐ°Ð½Ð°Ð»Ð° Ñ Ð¿ÑÑмолинейной («ÑÑандаÑÑной») внÑÑÑенней ÑÑенкой. ÐадаÑи, коÑоÑÑе ÑеÑалиÑÑ Ð² Ñ Ð¾Ð´Ðµ иÑÑледованиÑ: ÐÑполнение веÑиÑикаÑионнÑÑ Ð¸ меÑодиÑеÑÐºÐ¸Ñ ÑаÑÑеÑов, вклÑÑаÑ: иÑÑледование ÑеÑоÑной ÑÑвÑÑвиÑелÑноÑÑи, ÑаÑÑеÑÑ ÑÑаÑионаÑнÑÑ Ð¿Ð¾Ð»ÐµÐ¹ ÑеÑÐµÐ½Ð¸Ñ Ð² неподвижном канале пÑи ÑазлиÑнÑÑ Ð·Ð½Ð°ÑениÑÑ ÑиÑла РейнолÑдÑа, ÑопоÑÑавление Ñ Ð»Ð¸ÑеÑаÑÑÑнÑми даннÑми. ÐÑполнение паÑамеÑÑиÑеÑÐºÐ¸Ñ ÑаÑÑеÑов ÑÑÐµÑ Ð¼ÐµÑного ÑÑÑбÑленÑного ÑеÑÐµÐ½Ð¸Ñ Ð²Ð¾ вÑаÑаÑÑемÑÑ U-обÑазном канале пÑи ваÑÑиÑовании оÑиенÑаÑии канала и инÑенÑивноÑÑи вÑаÑениÑ. Ðнализ влиÑÐ½Ð¸Ñ Ð²Ð°ÑÑиÑÑемÑÑ Ð¿Ð°ÑамеÑÑов на ÑÑÑÑкÑÑÑÑ ÑеÑÐµÐ½Ð¸Ñ Ð² канале и ÑÑÐ¾Ð²ÐµÐ½Ñ Ð³Ð¸Ð´ÑавлиÑеÑÐºÐ¸Ñ Ð¿Ð¾ÑеÑÑ. 1. ЧиÑленное моделиÑование пÑоводилоÑÑ Ñ Ð¿Ñименением пÑогÑаммного обеÑпеÑÐµÐ½Ð¸Ñ ANSYSFLUENTна оÑнове RANS Ð¿Ð¾Ð´Ñ Ð¾Ð´Ð° и двÑÑ Ð¿Ð°ÑамеÑÑиÑеÑкой модели ÑÑÑбÑленÑноÑÑи. Ð ÑабоÑе пÑедÑÑÐ°Ð²Ð»ÐµÐ½Ñ Ð¿Ð¾Ð»Ñ ÑкоÑоÑÑи в ÑÑединном ÑеÑении канала, паÑаллелÑном ÑоÑÑевÑм ÑÑенкам, и в неÑколÑÐºÐ¸Ñ Ð¿Ð¾Ð¿ÐµÑеÑнÑÑ ÑеÑениÑÑ ÐºÐ°Ð½Ð°Ð»Ð°. ÐаеÑÑÑ Ð°Ð½Ð°Ð»Ð¸Ð· влиÑÐ½Ð¸Ñ Ð¾ÑиенÑаÑии канала и паÑамеÑÑа вÑаÑÐµÐ½Ð¸Ñ Ð½Ð° обÑÑÑ ÑÑÑÑкÑÑÑÑ Ð¼Ð¾Ð´ÐµÐ»Ð¸ÑÑемого Ð²Ð¸Ñ Ñевого ÑеÑениÑ. ÐÐ»Ñ ÐºÐ°Ð¶Ð´Ð¾Ð³Ð¾ набоÑа паÑамеÑÑов ÑаÑÑÑиÑÐ°Ð½Ñ Ð·Ð½Ð°ÑÐµÐ½Ð¸Ñ ÐºÐ¾ÑÑÑиÑиенÑа поÑеÑÑ Ð¿Ð¾Ð»Ð½Ð¾Ð³Ð¾ давлениÑ. РезÑлÑÑаÑÑ ÑопоÑÑÐ°Ð²Ð»ÐµÐ½Ñ Ñо знаÑениÑми коÑÑÑиÑиенÑа поÑеÑÑ, полÑÑеннÑми Ð´Ð»Ñ ÐºÐ°Ð½Ð°Ð»Ð° Ñ Ð¿ÑÑмолинейной внÑÑÑенней ÑÑенкой. УÑÑановлено, ÑÑо в болÑÑинÑÑве ÑаÑÑмоÑÑеннÑÑ ÑлÑÑаев поÑеÑи в канале Ñ Ð¾Ð¿ÑимизиÑованной ÑÑенкой знаÑиÑелÑно ниже (Ð¾Ñ Ð¿Ð¾Ð»ÑÑоÑа до двÑÑ Ñаз), Ñем в канале Ñо ÑÑандаÑÑной внÑÑÑенней ÑÑенкой. Тема вÑпÑÑкной квалиÑикаÑионной ÑабоÑÑ: «ЧиÑленное моделиÑование ÑÑÑбÑленÑного ÑеÑÐµÐ½Ð¸Ñ Ð²Ð¾ вÑаÑаÑÑемÑÑ ÐºÑÑÑоизогнÑÑом U-обÑазном канале пÑи ваÑÑиÑовании оÑиенÑаÑии канала и геомеÑÑии внÑÑÑенней ÑÑенки». ÐÐ°Ð½Ð½Ð°Ñ ÑабоÑа поÑвÑÑена ÑиÑÐ»ÐµÐ½Ð½Ð¾Ð¼Ñ Ð¸ÑÑÐ»ÐµÐ´Ð¾Ð²Ð°Ð½Ð¸Ñ ÑеÑÐµÐ½Ð¸Ñ Ð²Ð¾ вÑаÑаÑÑемÑÑ U-обÑазном канале Ñ Ð¾Ð¿ÑимизиÑованной ÑоÑмой внÑÑÑенней ÑÑенки пÑи ÑазлиÑной оÑиенÑаÑии плоÑкоÑÑи иÑкÑÐ¸Ð²Ð»ÐµÐ½Ð¸Ñ ÐºÐ°Ð½Ð°Ð»Ð° оÑноÑиÑелÑно оÑи вÑаÑениÑ. Ðа Ð²Ñ Ð¾Ð´Ð½Ð¾Ð¼ и вÑÑ Ð¾Ð´Ð½Ð¾Ð¼ ÑÑаÑÑÐºÐ°Ñ ÑеÑение канала квадÑаÑное. ÐÑделÑнÑе ÑаÑÑеÑÑ ÑопоÑÑавиÑелÑной напÑавленноÑÑи пÑоводилиÑÑ Ñакже Ð´Ð»Ñ ÑлÑÑÐ°Ñ ÐºÐ°Ð½Ð°Ð»Ð° Ñ Ð¿ÑÑмолинейной («ÑÑандаÑÑной») внÑÑÑенней ÑÑенкой. ÐадаÑи, коÑоÑÑе ÑеÑалиÑÑ Ð² Ñ Ð¾Ð´Ðµ иÑÑледованиÑ: 1. ÐÑполнение веÑиÑикаÑионнÑÑ Ð¸ меÑодиÑеÑÐºÐ¸Ñ ÑаÑÑеÑов, вклÑÑаÑ: иÑÑледование ÑеÑоÑной ÑÑвÑÑвиÑелÑноÑÑи, ÑаÑÑеÑÑ ÑÑаÑионаÑнÑÑ Ð¿Ð¾Ð»ÐµÐ¹ ÑеÑÐµÐ½Ð¸Ñ Ð² неподвижном канале пÑи ÑазлиÑнÑÑ Ð·Ð½Ð°ÑениÑÑ ÑиÑла РейнолÑдÑа, ÑопоÑÑавление Ñ Ð»Ð¸ÑеÑаÑÑÑнÑми даннÑми. 2. ÐÑполнение паÑамеÑÑиÑеÑÐºÐ¸Ñ ÑаÑÑеÑов ÑÑÐµÑ Ð¼ÐµÑного ÑÑÑбÑленÑного ÑеÑÐµÐ½Ð¸Ñ Ð²Ð¾ вÑаÑаÑÑемÑÑ U-обÑазном канале пÑи ваÑÑиÑовании оÑиенÑаÑии канала и инÑенÑивноÑÑи вÑаÑениÑ. 3. Ðнализ влиÑÐ½Ð¸Ñ Ð²Ð°ÑÑиÑÑемÑÑ Ð¿Ð°ÑамеÑÑов на ÑÑÑÑкÑÑÑÑ ÑеÑÐµÐ½Ð¸Ñ Ð² канале и ÑÑÐ¾Ð²ÐµÐ½Ñ Ð³Ð¸Ð´ÑавлиÑеÑÐºÐ¸Ñ Ð¿Ð¾ÑеÑÑ. ЧиÑленное моделиÑование пÑоводилоÑÑ Ñ Ð¿Ñименением пÑогÑаммного обеÑпеÑÐµÐ½Ð¸Ñ ANSYSFLUENTна оÑнове RANS Ð¿Ð¾Ð´Ñ Ð¾Ð´Ð° и двÑÑ Ð¿Ð°ÑамеÑÑиÑеÑкой модели ÑÑÑбÑленÑноÑÑи. Ð ÑабоÑе пÑедÑÑÐ°Ð²Ð»ÐµÐ½Ñ Ð¿Ð¾Ð»Ñ ÑкоÑоÑÑи в ÑÑединном ÑеÑении канала, паÑаллелÑном ÑоÑÑевÑм ÑÑенкам, и в неÑколÑÐºÐ¸Ñ Ð¿Ð¾Ð¿ÐµÑеÑнÑÑ ÑеÑениÑÑ ÐºÐ°Ð½Ð°Ð»Ð°. ÐаеÑÑÑ Ð°Ð½Ð°Ð»Ð¸Ð· влиÑÐ½Ð¸Ñ Ð¾ÑиенÑаÑии канала и паÑамеÑÑа вÑаÑÐµÐ½Ð¸Ñ Ð½Ð° обÑÑÑ ÑÑÑÑкÑÑÑÑ Ð¼Ð¾Ð´ÐµÐ»Ð¸ÑÑемого Ð²Ð¸Ñ Ñевого ÑеÑениÑ. ÐÐ»Ñ ÐºÐ°Ð¶Ð´Ð¾Ð³Ð¾ набоÑа паÑамеÑÑов ÑаÑÑÑиÑÐ°Ð½Ñ Ð·Ð½Ð°ÑÐµÐ½Ð¸Ñ ÐºÐ¾ÑÑÑиÑиенÑа поÑеÑÑ Ð¿Ð¾Ð»Ð½Ð¾Ð³Ð¾ давлениÑ. РезÑлÑÑаÑÑ ÑопоÑÑÐ°Ð²Ð»ÐµÐ½Ñ Ñо знаÑениÑми коÑÑÑиÑиенÑа поÑеÑÑ, полÑÑеннÑми Ð´Ð»Ñ ÐºÐ°Ð½Ð°Ð»Ð° Ñ Ð¿ÑÑмолинейной внÑÑÑенней ÑÑенкой. УÑÑановлено, ÑÑо в болÑÑинÑÑве ÑаÑÑмоÑÑеннÑÑ ÑлÑÑаев поÑеÑи в канале Ñ Ð¾Ð¿ÑимизиÑованной ÑÑенкой знаÑиÑелÑно ниже (Ð¾Ñ Ð¿Ð¾Ð»ÑÑоÑа до двÑÑ Ñаз), Ñем в канале Ñо ÑÑандаÑÑной внÑÑÑенней ÑÑенкой.<br />Topic of the graduation thesis: "Numerical modeling of turbulent flow in a rotating steeply curved U-shaped channel when the direction of the channel and the geometry of the inner wall are rotated". This work is devoted to a numerical study of the flow in a rotating U-shaped channel with an optimized shape of the inner wall for different orientations of the channel curvature plane relative to the rotation axis. The cross section of the channel is square at the inlet and outlet sections. Separate calculations of the comparative directivity were also carried out for the case of a channel with a rectilinear ("standard") inner wall. Tasks that were solved in the course of the study: Performing verification and methodological calculations, including: the study of grid  sensitivity, calculations of stationary flow fields in a fixed channel at various values ââof the Reynolds number, comparison with literature data. Performing parametric calculations of three-dimensional turbulent flow in a rotating U-shaped channel with varying channel orientation and rotation intensity. Analysis of the effect of variable parameters on the flow structure in the channel and the level of hydraulic losses. Numerical simulation was carried out using the ANSYS FLUENT software based on the RANS approach and a two-parameter turbulence model. The paper presents the velocity fields in the middle section of the channel, parallel to the end walls, and in several cross sections of the channel. An analysis is given of the influence of the channel orientation and the rotation parameter on the general structure of the simulated vortexflow. For each set of parameters, the values ââof the total pressure loss coefficient are calculated. The results are compared with the values ââof the loss factor obtained for a channel with a rectilinear inner wall. It has beenestablished that in most of the cases considered, the losses in a channel with an optimized wall are significantly lower (from one and a half to two times) than in a channel with a standard inner wall. Topic of the graduation thesis: "Numerical modeling of turbulent flow in a rotating steeply curved U-shaped channel when the direction of the channel and the geometry of the inner wall are rotated". This work is devoted to a numerical study of the flow in a rotating U-shaped channel with an optimized shape of the inner wall for different orientations of the channel curvature plane relative to the rotation axis. The cross section of the channel is square at the inlet and outlet sections. Separate calculations of the comparative directivity were also carried out for the case of a channel with a rectilinear ("standard") inner wall. Tasks that were solved in the course of the study: 1. Performing verification and methodological calculations, including: the study of grid  sensitivity, calculations of stationary flow fields in a fixed channel at various values ââof the Reynolds number, comparison with literature data. 2. Performing parametric calculations of three-dimensional turbulent flow in a rotating U-shaped channel with varying channel orientation and rotation intensity. 3. Analysis of the effect of variable parameters on the flow structure in the channel and the level of hydraulic losses. Numerical simulation was carried out using the ANSYS FLUENT software based on the RANS approach and a two-parameter turbulence model. The paper presents the velocity fields in the middle section of the channel, parallel to the end walls, and in several cross sections of the channel. An analysis is given of the influence of the channel orientation and the rotation parameter on the general structure of the simulated vortex flow. For each set of parameters, the values ââof the total pressure loss coefficient are calculated. The results are compared with the values ââof the loss factor obtained for a channel with a rectilinear inner wall. It has been established that in most of the cases considered, the losses in a channel with an optimized wall are significantly lower (from one and a half to two times) than in a channel with a standard inner wall.
- Subjects :
- U-обÑазнÑй канал
U-shaped channel
гидÑавлиÑеÑкие поÑеÑи
channel orientation
rotation of the channel
optimized shape
опÑимизиÑÐ¾Ð²Ð°Ð½Ð½Ð°Ñ ÑоÑма
hydraulic loss
ÐаÑемаÑиÑеÑкое моделиÑование
ТÑÑбÑленÑное ÑеÑение
вÑаÑение канала
оÑиенÑаÑÐ¸Ñ ÐºÐ°Ð½Ð°Ð»Ð°
Subjects
Details
- Language :
- Russian
- Database :
- OpenAIRE
- Accession number :
- edsair.doi...........ed3490cb3e4d50bdd6630e59f5de5836
- Full Text :
- https://doi.org/10.18720/spbpu/3/2022/vr/vr22-1626