potential-flow theory 中文意思是什麼
potential-flow theory
解釋
勢流理論-
The potential flow theory is then applied to the overlap of the slipstream and the flow over the wing
用位流理論來處理螺旋槳滑流與機翼繞流的迭加。 -
Since these theoretical analyses are based on inviscid potential flow theory, theoretical calculation and computational simulation may complement each other. the hydrodynamics and undulating propulsion of specimens were studied using three dimensional computational fluid dynamics ( cfd ) modeling. the cfd analysis using kinematic model of undulatory dorsal / median fin draws a series of conclusions, which include that the body drag increases significantly with the lateral body oscillation ; the body drag is minimum while the start point of
計算結果表明游動過程中的形體阻力隨側向周期性擺動而增大;當背鰭前端位於身體側向最寬處時，形體阻力具有局部最小值，結論與實驗觀測結果相吻合;在實驗觀測的典型運動參數下，波動面的運動方程中的非對稱因素的出現使推進力增大約1 . 10倍。 -
In the second part, firstly, the mathematical model for predicting hydrodynamic characteristics of varivec propeller under steady or unsteady condition are present, based on the general propeller lifting - surface theory, potential flow theory and green theorem. then, theoretical calculation methods for predicting hydrodynamic characteristics of varivec propeller designed above paragraphs are present, based on the finite basic solution method, the unsteady vortex lattice method and hess - smith method
在理論計算部分，本文首先基於常規螺旋槳升力面理論、勢流理論和格林定理建立了定常和非定常狀態下全方向推進器水動力性能計算的數學模型，然後利用有限基本解法、非定常渦格法和赫斯?史密斯方法對全方向推進器定常和非定常狀態下的數學模型進行了數值離散，接下來針對前面所設計的全方位推進器進行了數值預報。 -
In this thesis, according to the theory of potential flow, the mathem - atical model of two bodies moving in inviscid fluid with arbitary 3 - dimensional shape is presented and the formula of interacted force between them is derived
本文以勢流理論為基礎，根據水下兩個物體運動的數學模型，給出了它們間相互作用力的公式。 -
The main work in this paper includes three parts : the theory research on partially - cavitating and super - cavitating axisymmetric bodies, the numerical computations and experimental investigations on partially - cavitation and super - cavitation on axisymmetric bodies. after finishing the study of theory and experiment on the partially - cavitation and super - cavitation for axisymmetric body, i use the potential flow theory to build the mathematical model on the partially - cavitation and super - cavitation for axisymmetric body. many cavity wake models, such as pressure recovery close model, riabouchinsky model and re - entrant jet model, are studied seriously
本文在深入研究了回轉體局部空化與超空化理論及實驗結果的基礎上，基於勢流理論，建立了回轉體局部空泡和超空泡流場的基本數學模型，通過對kinnas和fine 、 uhlman以及jiedang和gertkuiper等人基於二維水翼提出的壓力恢復閉合模型、鏡像板模型和回射流模型等空泡尾流模型進行了逐一的研究分析，發現其中的壓力恢復閉合模型較適用於模擬回轉體空泡尾部流場，並選用此空泡尾流模型作為求解回轉體空化流場正問題與逆問題的數學模型的組成部分。 -
This paper uses the method of tensor to proof the tenable condition of generalized plastic potential, discuss the mathematical essential of the associated and disassociated flow rule and the relation of the yield surface and plastic potential surface, reason the expression of plastic factor strictly. debate the limitation on drucker ' s postulate. subsequently, this paper gives the mathematical basis of constitutive theory involving the rotation of principal stress axes. so it is proved that the mathematical and mechanical foundation of the generalized plastic mechanic
本文運用張量的方法論證了廣義塑性位勢理論成立的充要條件，討論了關聯與非關聯流到法則的數學實質，屈服面與塑性勢面的關系，嚴密推導了塑性因子的表達式，討論了drucker公設的局限性，並給出了考慮主應力軸旋轉時土體本構模型理論的數學依據，系統的論證了廣義塑性力學成立的數學力學基礎。 -
To provide theoretical basis for the enhancement of affinity chromatography, the synergy of multi fields, such as temperature field, chemical potential field and gravity field in affinity chromatography operated by a tapered bed with the continuous up - flow, was analyzed according to the phenomenological theory, and the relationships among the individual components within a field were investigated
摘要為了對親和層析過程的強化提供理論依據，應用非平衡熱力學唯象理論，分析了該過程中溫度場、化學勢場及重力場等各種場之間的協同關系，以及各自場內不同分量之間的協同關系。 -
Based on the theory of potential flow, steady lifting - surface theory and the potential based low - order surface panel methodi the mathematical models for predicting the performance of the hd propeller and mau propeller are respectively established in this paper, and the numerical calculations are also carried out
本文首先基於勢流理論和定常螺旋槳的升力面理論，以及基於速度勢的低階面元法理論建立了滬東型（ hd ）螺旋槳和常規mau圖譜槳水動力性能預報的數學模型，並對其進行了數值分析。 -
Firstly, fkdv equation for the nonlinear surface wave was obtained by perturbation technique from potential flow theory
首先，從勢流理論出發，利用攝動法，導出了非線性表面波遵循的fkdv方程。 -
Based on the potential flow theory and the general dynamics principle, two kinds of formula for calculating hydrodynamic forces and moments, which are in lagrangian form and bernoulli form, and a lot of corresponding numerical results using bernoulli formula are given
根據勢流理論計算流場，給出了受力計算的lagrange公式、 bernoulli公式，以及使用bernoulli公式計算的結果。物面網格離散時，著重考慮並分析了尾部平端面和首尾不對稱性這些因素對受力計算精度的影響。
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