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杂交命题
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  hybrid problem
     in this article a novel universal method for solving the inverse problem and hybrid problem of types A, C and D is proposed, a new image plane ξ-η being introduced.
     本文提出了叶栅气动反命题和A型、C型及D型杂交命题的新解法。 为此,引进了一种新的映象平面ξ-η。
短句来源
     Based on the variational principle in terms of the moment function for type-C hybrid problem of cascades on an arbitrary streamsheet of revolution, this paper presents a new method for designing a ventilator's blades which can satisfy requirements of many performances such as aerodynamics, strength, manufacturing engineering, etc.
     本文以任意旋成面叶栅C类杂交命题矩函数型的变分原理为基础,提供了一种能同时考虑气动、强度和制造工艺等多种性能要求的新的风机叶片设计方法。
短句来源
     The variational principles are derived for the full-direct problem of an incompressible flow along a S2 stream surface by means of the inverse-deduction method, and based on them the VPs are also developed for the Type-A hybrid problem by applying the inversive transformation. The paper aims at provision of a new theoretical basis for the design, modification and flow analysis of runners of hydraulic turbines, pumpl and ventilators by the FEM and all kinds of direct variational methods.
     本文首先用反推法建立了S_2流面不可压缩流动全正命题的变分原理和广义变分原理,然后进一步用反演变换建立了A类杂交命题的变分原理族,旨在为用有限元法和各种变分直接解法进行水轮机、水泵和风机叶轮的设计、改型及流场分析提供新的理论基础。
短句来源
  hybrid problems
     FAMILIES OF VARIATIONAL PRINCIPLES FOR SEMI-INVERSE AND TYPE 'A'HYBRID PROBLEMS ON A S_2-STREAMSHEET FOR FLUIDS OF PURE SUBSTANCE
     适用于纯物质流体工质S_2流面半反命题和A型杂交命题的变分原理族
短句来源
     Variational Principles for Hydrodynamic Full-direct and Type-a Hybrid Problems on a S_2 Stream Surface
     S_2流面水动全正命题和A类杂交命题的变分原理
短句来源
     Then,the variational and generalized variational principles are developed for the types A,D,and E hybrid problems of an incompressible flow along a mixed-flow S2 stream surface by applying the inverse transformation to the corresponding variational principles for the semi-inverse problem of a mixed-flow S2 stream surface.
     然后对混流式S_2流面半反命题的变分原理进行反演变换得到混流式S_2流面不可压缩流动A,D和E类杂交命题的变分原理和广义变分原理。
短句来源
     Variational and Generalized Variational Principles for the Hybrid Problems on a S_2-streamsheet in Axial-flow Hydraulic Machinery
     轴流式水力机械S_2流面杂交命题的变分原理与广义变分原理
短句来源
     Variational Principles (VPs) and Generalized VPs for Hydrodynamic Full-direct and Hybrid Problems on an S_2 Stream Surface
     S_2流面水动力学全正命题和杂交命题的变分原理与广义变分原理
短句来源
更多       
  hybrid problems of cascades
     VARIATIONAL PRINCIPLES FOR HYDRODYNAMIC HYBRID PROBLEMS OF CASCADES ON RADIAL S_1 STREAM SURFACE BASED ON VARIATIONS WITH VARIABLE DOMAIN
     径流式S_1流面叶栅水动杂交命题的变域变分理论
短句来源
  “杂交命题”译为未确定词的双语例句
     Variational Principles for Hydrid Problems of S_2 Stream Surface in Mixed-flow Hydraulic Machinery
     混流式水力机械S_2流面杂交命题的变分原理
短句来源
     FINITE ELEMENT SOLUTION OF QUASI 3--D CROSS PROPOSITION FOR INTAKE CONDUIT OF LARGE PUMP STATION
     大型卧式轴流泵站进水流道准三维杂交命题的有限元解
短句来源
     Taking angle function defined by continuity equation as an argument,variational principles assigned for viscous compressible complete gas mixture on S 1 stream surface cascade for the axial compressor and broad variational prineiple are built.
     以连续性方程定义出的角函数为自变量,建立了轴流压缩机S1流面叶栅内粘性可压缩完全气体杂交命题的变分原理与广义变分原理。
短句来源
     Inparticular, the solution procedure is illustrated in detail for the type-C hybrid problem--design a cascade with prescribed profile thickness distribution and suction surface velocity distribution.
     重点论述了C型杂交命题——设计出具有给定厚度分布和凸面流速分布的叶栅——的求解方法。
短句来源
     In this paper the theory of new-type universal function Y and mapping plane is applied to derive finite element equation of quasi 3-D steady flow of incompressible ideal fluid in the field of gravity, and then two types of quasi 3-D cross proposition for inlet conduit of large hori- zontal axial pump station are calculated by the finite element method.
     本文应用有关新型通用函数Y及映象平面的理论,推导了重力作用下不可压缩理想流体准三维稳定流动的有限元方程,并对大型卧式轴流泵站进水流道两种类型的准三维杂交命题进行了有限元分析。
短句来源
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  hybrid problem
We study the hybrid problem of Hua's theorem and the Piatetski-Shapiro prime number theorem, and obtain results in this direction of the nonhomogeneous case.
      
This hybrid problem is shown to be well-posed in weighted Sobolev spaces with attached asymptotics.
      
The main purpose in this paragraph is to manage the optimal resolution of the hybrid problem through this set of cells.
      
The principle of our solving algorithm 4 is to compute column by column a piecewise optimal solution of our hybrid problem along the path.
      
  hybrid problems
A variable-domain variational theory using Clebsch variables for hybrid problems of 2-D transonic rotational flow
      
A unified variational theory of hybrid problems for fully 3-D transonic rotor-flow with shocks.
      
Based on [3], the unified variable-domain variational theory of hybrid problems for rotor-flow [1], [2], [16], [24] is extended to fully 3-D transonic rotor-flows with shocks, unifying and generalizing the direct and inverse problems.
      
Derivation and transformation of variational principles with emphasis on inverse and hybrid problems in fluid mechanics: a syste
      
This approach has been used with great success in establishing VP-families in fluid mechanics with special attention to inverse and hybrid problems of flow in a rotating system.
      


A new general function - moment function - for ideal compressible flow along an arbitrary rotating streamsheet of revolution is introduced first, and furthermore, generalized to viscous flows. Finally, based on it, a universal method for solving inverse- & hybrid (type A, [2]) aerodynamic problems of airfoil cascades on a general streamsheet of revolution is proposed. It has been shown that the new function possesses some remarkable characteristics which make it particularly suitable for solving hybrid problems...

A new general function - moment function - for ideal compressible flow along an arbitrary rotating streamsheet of revolution is introduced first, and furthermore, generalized to viscous flows. Finally, based on it, a universal method for solving inverse- & hybrid (type A, [2]) aerodynamic problems of airfoil cascades on a general streamsheet of revolution is proposed. It has been shown that the new function possesses some remarkable characteristics which make it particularly suitable for solving hybrid problems and to transonic flow. The possibility of an extension of moment function to full 3-D. viscous compressible flow is also indicated [8].

本文首先对旋转的任意旋成面上的理想可压缩流动引入一新通用函数——矩函数,并论证它的主要性质,接着将它推广到粘性气体的情况。然后,提出一个基于矩函数的旋成面叶栅气动反命题及A型杂交命题的通用解法。研究表明,矩函数对求解杂交命题(反命题是其特例)和跨声速流动具有明显的优越性。

in this article a novel universal method for solving the inverse problem and hybrid problem of types A, C and D is proposed, a new image plane ξ-η being introduced. Inparticular, the solution procedure is illustrated in detail for the type-C hybrid problem--design a cascade with prescribed profile thickness distribution and suction surface velocity distribution. This new approach, in comparison with the previous ones[1,4,5,6], is capable of treating blunt nose profiles with higher accuracy and very suitable...

in this article a novel universal method for solving the inverse problem and hybrid problem of types A, C and D is proposed, a new image plane ξ-η being introduced. Inparticular, the solution procedure is illustrated in detail for the type-C hybrid problem--design a cascade with prescribed profile thickness distribution and suction surface velocity distribution. This new approach, in comparison with the previous ones[1,4,5,6], is capable of treating blunt nose profiles with higher accuracy and very suitable for joint use with the optimization theory of cascades[4,10]. Perhaps the most attractive feature of this approach is its merit of extension to the solution of the hybrid problem of fully 3-D flow.

本文提出了叶栅气动反命题和A型、C型及D型杂交命题的新解法。为此,引进了一种新的映象平面ξ-η。重点论述了C型杂交命题——设计出具有给定厚度分布和凸面流速分布的叶栅——的求解方法。这种新解法的优点是能更好地处理钝头叶型,也适宜与叶栅最优化理论配套使用,特别是它还易于推广到三元叶栅的杂交命题上去。

Based on the previous works [3-5] and making use of the functional variation with variable domain, the present paper suggests a unified theory of various hybrid problems for 3-D incompressible potential flow in a rotor-blading. Three typical hybrid problems (H_A×H_A), (H_B×H_A) and (H_C×H_A) are treated of in detail, and three families of variational principles (VPs) and generalized VPs are established for them. The hybrid problem (H_A×H_A) includes the usual direct problem as a simplest special case. This theory...

Based on the previous works [3-5] and making use of the functional variation with variable domain, the present paper suggests a unified theory of various hybrid problems for 3-D incompressible potential flow in a rotor-blading. Three typical hybrid problems (H_A×H_A), (H_B×H_A) and (H_C×H_A) are treated of in detail, and three families of variational principles (VPs) and generalized VPs are established for them. The hybrid problem (H_A×H_A) includes the usual direct problem as a simplest special case. This theory provides a series of new rational ways for the new design and/or old blade modification and also constitutes an important part of the aerpdynamic optimization theory of blading [8]. It can be extended further to compressible flow as well as to rotational flow.

本文在前文[3、4、5]的基础上,应用泛函变域变分的工具,进而建立了叶轮机内不可压缩流体完全三元势流各类杂交命题(正命题是其中〈H_A×H_A〉型杂交命题的一个最简单的特例)统一的变分原理族。这一理论为三元叶轮的设计和改型提供了一系列新的合理途经,也是叶轮最优化理论的重要组成部分,并可以进一步推广到可压缩流体和有旋流动上去。

 
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