雷諾應力模型 的英文怎麼說
中文拼音 [léinuòyīnglìmóxíng]
雷諾應力模型
英文
reynolds stre model- 雷 : 1. (雲層放電時發出的響聲) thunder 2. (軍事上用的爆炸武器) mine 3. (姓氏) a surname
- 諾 : Ⅰ動詞(答應; 允許) promise Ⅱ感嘆詞(答應的聲音) yesⅢ名詞(姓氏) a surname
- 應 : 應動詞1 (回答) answer; respond to; echo 2 (滿足要求) comply with; grant 3 (順應; 適應) suit...
- 力 : Ⅰ名1 (力量; 能力) power; strength; ability; capacity 2 [物理學] (改變物體運動狀態的作用) forc...
- 模 : 模名詞1. (模子) mould; pattern; matrix 2. (姓氏) a surname
- 雷諾 : jean renoir
- 模型 : 1 (仿製實物) model; pattern 2 (制砂型的工具) mould; pattern3 (模子) model set; mould patter...
-
The effect of reynolds number on rudder hydrodynamic performance is also analyzed. up to the stall angle the computed lift and drag agree well with measurements and other author ' s calculations, whereas stall angle, lift and drag beyond the stall angle are slightly under - predicted. the solver is used to investigate laminar and turbulent separated flows around a 6 : 1 prolate spheroid at high incidence angles and their effects on hydrodynamic forces
應用所開發的求解器,以naca0015翼型舵為算例計算了船舵在不同雷諾武漢理三;大學博士學位論文數下大舵角范圍內的三維粘性流場及水動力,成功地預報了舵的失速角和最大升力,並初步探討了雷諾數對舵水動力的影響;計算結果與現有試驗和計算數據比較,吻合程度相當好,初步檢驗和驗證了該求解器精確模擬粘性流動和計算水動力的能力。For the present two les models, adopting the subgrid eddy viscosity concept and introducing the transport equation of turbulence energy k, the subgrid scale turbulence is parameterized by the turbulence energy k and the length scale of turbulence / ( k - 1 model ). in addition, vegetation is considered as an internal source of resistant force and turbulence energy
在應用大渦模擬方法求解數值計算模型控制方程時,亞網格雷諾應力項沿用了亞網格渦粘性系數思路,引入亞網格紊流脈動動能k的輸運方程,建立了關于亞網格紊流脈動動能k和紊流特徵長度l的k - l模型求解。Next, aiming at the state of the art in engineering turbulence models, one extended explicit algebraic reynolds stress model to simulate anisotropic buoyant turbulent flows. validation was done using experimental and other numerical results of turbulent thermal mixing in t - junction flows
進一步的,針對當前考慮浮力作用紊流模型的研究現狀,導出了適合模擬各向異性的浮力紊流的顯式代數雷諾應力模型,並利用t型交叉管內的溫度混合試驗成果進行了分析驗證。When dealing with a low swirl number flow, the results by renormalization group ( rng ) k - ? model agree well enough with experiments, so we do not have to apply reynolds stress model ( rsm )
在計算弱旋氣相流動時, rng ?模型可以滿足工程上的精度需求,因而沒有必要運用計算量很大的雷諾應力模型。At the same time, it presents three turbulence models ( standard k - ? model, renormalization group k - ? model and reynolds stress model ) which have been used widely at present, and then their merits / shortcomings have been compared while being used to calculate swirling jets
文中對目前應用較多的?模型、重正化群( rng )的?模型及雷諾應力模型進行了理論上的分析,經過對不同旋流強度的旋轉射流的計算,比較了它們在實際求解中的優劣。A novel strip - coil - baffle structure used to enhance heat transfer and support the tube bundle for a tube - shell heat exchanger is proposed. the new structure can sleeve the tubes in bundle alternatively to create a vortex flow in a heat exchanger. the numerical simulation on the flow and heat transfer characteristics for this new structure heat exchanger is conducted. the computational domain consists of two strip - coil sleeved tubes and two bare tubes oppositely placed at each corner of a square. the velocity and temperature fields in such strip - coil - baffled channel are simulated using fluent software. the effects of the strip - coil - baffles on heat transfer enhancement and flow resistance in relation to the reynolds number are analyzed. the results show that this new structure bundle can enhance the heat transfer coefficient up to a range of 40 ? to 55 ? in comparison with a bare tube bundle ; meanwhile, higher flow resistance is also accompanied. it is believe that the strip - coil - baffled heat exchanger should have promising applications in many industry fields
介紹了一種用於強化管殼式換熱器殼側傳熱和支撐管束的螺旋折流片新型結構,該結構是對換熱器管子相間地套上螺旋折流片以產生旋渦流動.研究模型是在正方形布置的4個管子中的2個對角管子套上螺旋折流片后形成的通道,利用fluent軟體對該上述四管通道模型的流場和溫度分佈情況進行了數值模擬;分析了四管通道模型中螺旋折流片對強化傳熱和流動阻力隨雷諾數的變化關系的影響.算例結果顯示該新型結構可比相同尺寸的光管通道中的情形傳熱系數提高約40 ? 55 ? ,同時也將伴隨較高的流動阻力.可以相信螺旋折流片式換熱器將會在許多工業領域有良好的應用前景Abstract : a novel strip - coil - baffle structure used to enhance heat transfer and support the tube bundle for a tube - shell heat exchanger is proposed. the new structure can sleeve the tubes in bundle alternatively to create a vortex flow in a heat exchanger. the numerical simulation on the flow and heat transfer characteristics for this new structure heat exchanger is conducted. the computational domain consists of two strip - coil sleeved tubes and two bare tubes oppositely placed at each corner of a square. the velocity and temperature fields in such strip - coil - baffled channel are simulated using fluent software. the effects of the strip - coil - baffles on heat transfer enhancement and flow resistance in relation to the reynolds number are analyzed. the results show that this new structure bundle can enhance the heat transfer coefficient up to a range of 40 ? to 55 ? in comparison with a bare tube bundle ; meanwhile, higher flow resistance is also accompanied. it is believe that the strip - coil - baffled heat exchanger should have promising applications in many industry fields
文摘:介紹了一種用於強化管殼式換熱器殼側傳熱和支撐管束的螺旋折流片新型結構,該結構是對換熱器管子相間地套上螺旋折流片以產生旋渦流動.研究模型是在正方形布置的4個管子中的2個對角管子套上螺旋折流片后形成的通道,利用fluent軟體對該上述四管通道模型的流場和溫度分佈情況進行了數值模擬;分析了四管通道模型中螺旋折流片對強化傳熱和流動阻力隨雷諾數的變化關系的影響.算例結果顯示該新型結構可比相同尺寸的光管通道中的情形傳熱系數提高約40 ? 55 ? ,同時也將伴隨較高的流動阻力.可以相信螺旋折流片式換熱器將會在許多工業領域有良好的應用前景Three - dimensional gas flow field in the new vortex quick separation system with an inner component of fcc disengager was simulated based on the reynolds stress model ( rsm ) provided by cfx
摘要用cfx軟體對催化裂化沉降器新型旋流快分器的氣相流場進行了三維模擬,湍流模型採用雷諾應力輸運方程模型。If the two - equation turbulence models employ a linear relationship between the reynolds stress and the mean strain - rate tensors, this relationship is known as the generalized boussinesq model, the two - equation models can be extended for a wider range of applicability by developing more advanced nonlinear algebraic relations between the stress tensor and the mean - velocity gradient and the turbulent scales, this is known as explicit algebraic stress models ( easm )
另一個是構成模型,即決定應力張量、應變率張量和兩個湍流尺度因子之間的函數關系式,它決定了雷諾應力。如果構成模型是線性的,則為boussinesq渦粘模型( evm ) ,如果構成模型是非線性的代數關系式,則為顯式代數應力模型( easm ) 。As to the gas phase flow field, author chooses the standard k - model, the realizable k - model and the reynolds stress model to make simulation and comparison
對于氣相流場,本文作者針對k -雙方程模型,可實現性k -雙方程模型以及雷諾應力模型進行了模擬比較。In the same case of the initial conditions and boundary conditions the expectation result of the realizable k - model and the reynolds stress model is better to the standard k - model, and moreover the expectation result of the reynolds stress model is close to the test result
發現在相同初始條件和邊界條件下、可實現性k -雙方程模型和雷諾應力模型預報結果優于k -模型,而雷諾應力模型預報結果與試驗結果更為一致。But when the swirl number is high, we have to resort to rsm, because of the obvious differences between experimental and numerical results by the models based on " effective viscosity "
但是,在強旋流動中,基於「有效粘性」的各個模型的計算結果和實驗相差很遠,只有採用雷諾應力模型才能得到較為滿意的結果。Numerical simulation of inner flow field in hydrocyclone with rsm model
雷諾應力模型對旋流器內流場的數值模擬Reynolds stress model
雷諾應力模型The reynolds stress model was used to simulate the flow field during the filtration and back pulse process in the ceramic filter vessel containing three filters
摘要用雷諾應力模型模擬了含有三根濾管的過濾器內過濾和反吹的整個過程的流場。In this thesis, the strongly swirling turbulent flow in gas - solid cyclone separators is simulated using the standard k - ? rng k - and reynolds stress equation models ( dsm ). it is demonstrated via comparison between the simulation results with experimental data that the dsm model is superior to the other models
針對分離器內部的這種復雜氣-固兩相湍流運動,本文採用了標準k -模型、 rngk -模型和雷諾應力模型( ssg ) ,利用貼體網格技術,模擬計算了分離器內部流動,並將計算結果與實驗數據進行分析、比較。分享友人