公开(公告)号：US06638021B2

公开(公告)日：2003-10-28

申请号：US09985177

申请日：2001-11-01

申请人： Markus Olhofer ,  Bernhard Sendhoff ,  Satoshi Kawarada ,  Toyotaka Sonoda ,  Toshiyuki Arima

发明人： Markus Olhofer ,  Bernhard Sendhoff ,  Satoshi Kawarada ,  Toyotaka Sonoda ,  Toshiyuki Arima

IPC分类号： F01D514

CPC分类号： F01D5/141 ,  F05D2250/713

摘要： A turbine blade for an axial-flow turbine includes an intrados generating a positive pressure, and an extrados generating a negative pressure, wherein the intrados and the extrados are provided between a leading edge and a trailing edge. An inflection point is provided between a concave portion on an upstream side and a convex portion on a downstream side in a region extending from a position of 80% on the intrados to a rear throat, and the length of a normal line drawn downwards from the intrados of one of the turbine blades to an extrados of the other turbine blade has at least one maximum value in a region extending from a front throat of the one turbine blade to a rear throat. Thus, it is possible to disperse a shock wave generated from the intrados at the trailing edge to prevent the generation of a strong shock wave, thereby reducing the pressure loss caused by the shock wave. In addition, a speed-reducing area can be formed on the extrados generating the negative pressure to promote the transition from a laminar flow boundary layer to a turbulent flow boundary layer, thereby preventing the separation of the boundary layer caused by the interference with a shock wave to reduce the pressure loss.

公开(公告)号：US06666654B2

公开(公告)日：2003-12-23

申请号：US10087986

申请日：2002-03-05

申请人： Markus Olhofer ,  Bernhard Sendhoff ,  Satoshi Kawarada ,  Toyotaka Sonoda ,  Toshiyuki Arima

发明人： Markus Olhofer ,  Bernhard Sendhoff ,  Satoshi Kawarada ,  Toyotaka Sonoda ,  Toshiyuki Arima

IPC分类号： F01D514

CPC分类号： F01D5/141

摘要： A blade for an axial-flow turbine includes an intrados producing a positive pressure between a leading edge and a trailing edge, and an extrados producing a negative pressure. The intrados is formed at its rear portion with a flat surface portion connected to the trailing edge, and the extrados has a curved surface portion formed at least at a portion corresponding to the flat surface portion. The trailing edge of the turbine blade is pointed at its end. The angle of intersection between the intrados and the extrados at the trailing edge is a right angle or an acute angle. Thus, it is possible to inhibit the flowing of a gas from the intrados at the trailing edge toward the extrados and to decrease the degree of curvature of the extrados at the trailing edge portion to reduce the flow speed, thereby minimizing a shock wave generated at the trailing edge portion to reduce the pressure loss and enhance the performance of the turbine.

摘要翻译： 用于轴流涡轮机的叶片包括产生前缘和后缘之间的正压的内部，以及产生负压的外径。 内部的后部形成有连接到后缘的平坦表面部分，并且外部具有至少形成在与平坦表面部分对应的部分处的弯曲表面部分。 涡轮机叶片的后缘指向其端部。 后缘和后端之间的交叉角度是直角或锐角。 因此，可以抑制气体从后缘处的内部流向外部并且降低后缘部分处的外凸的曲率以减小流速，从而最小化在 后缘部分，以减小压力损失并增强涡轮机的性能。

公开(公告)号：US06527510B2

公开(公告)日：2003-03-04

申请号：US09866924

申请日：2001-05-30

申请人： Markus Olhofer ,  Bernhard Sendhoff ,  Edgar Körner ,  Yoshihiro Yamaguchi ,  Toyotaka Sonoda ,  Toshiyuki Arima

发明人： Markus Olhofer ,  Bernhard Sendhoff ,  Edgar Körner ,  Yoshihiro Yamaguchi ,  Toyotaka Sonoda ,  Toshiyuki Arima

IPC分类号： F04D2944

CPC分类号： F04D29/681 ,  F04D21/00 ,  F04D29/544

摘要： It is an object of the present invention to provide a stator blade for an axial-flow compressor, in which the wave drag due to the generation of a shock wave in a transonic speed range can be suppressed to the minimum. For this purpose, the stator blade in the axial-flow compressor has an intrados producing a positive pressure, and an extrados producing a negative pressure. Both of the intrados and the extrados are located on one side of a chord line. A first bulge and a second bulge are formed on the intrados of the stator blade at a location on the side of a leading edge and on the side of a trailing edge, respectively. Thus, the generation of a shock wave on the extrados can be moderated to reduce the wave drag by positively producing the separation of a boundary layer on the intrados by the first bulge. In addition, the boundary layer rendered unstable by the first bulge on the intrados can be stabilized again by the second bulge on the intrados and hence, the increase in frictional drag due to the separation of the boundary layer on the intrados can be suppressed to the minimum.

公开(公告)号：US20120315136A1

公开(公告)日：2012-12-13

申请号：US13483377

申请日：2012-05-30

申请人： Toyotaka Sonoda ,  Toshiyuki Arima ,  Giles Endicott ,  Markus Olhofer ,  Bernhard Sendhoff

发明人： Toyotaka Sonoda ,  Toshiyuki Arima ,  Giles Endicott ,  Markus Olhofer ,  Bernhard Sendhoff

IPC分类号： F01D9/04

CPC分类号： F04D29/526 ,  F01D5/143 ,  F01D5/145 ,  F01D25/162 ,  F04D29/544 ,  F05D2220/36

摘要： A generating line of a casing surrounding an outer periphery of vanes of a stator disposed downstream of a rotor of the axial-flow compressor includes: a recessed region recessed outward in a radial direction from a position forward of a front edge of each of the vanes to a position rearward of a rear edge of the vane; and a protruding region bulging inward in the radial direction at an intermediate position of the recessed region in a front-rear direction thereof. Thus, a distribution of static pressure in the radial direction on a surface of the vane is improved by a first recessed portion forward of the protruding region, and the static pressure on the tip side is raised by a second recessed portion rearward of the protruding region.

摘要翻译： 围绕设置在轴流式压缩机的转子下游的定子的叶片的外周围的壳体的发生线包括：从每个叶片的前边缘的前方的前方的位置沿径向向外凹陷的凹陷区域 到达叶片的后边缘的后方的位置; 以及在凹部区域的前后方向的中间位置沿径向向内凸出的突出区域。 因此，通过突出区域的前方的第一凹部来提高在叶片的表面上的径向上的静压力的分布，并且尖端侧的静压由突出区域的后方的第二凹部上升 。

公开(公告)号：US20060275134A1

公开(公告)日：2006-12-07

申请号：US11294372

申请日：2005-12-06

申请人： Martina Hasenjager ,  Bernhard Sendhoff ,  Toyotaka Sonoda ,  Toshiyuki Arima

发明人： Martina Hasenjager ,  Bernhard Sendhoff ,  Toyotaka Sonoda ,  Toshiyuki Arima

IPC分类号： B64C11/16

CPC分类号： F01D5/141 ,  Y02T50/673 ,  Y10S416/02 ,  Y10S416/05

摘要： A first bent portion bent toward an intrados and a second bent portion located in the rear of the first bent portion and bent toward an extrados are provided on a camber line on a trailing edge in the rear of 90% of a chord length of a turbine blade having an extremely low aspect ratio for an axial-flow turbine. The inclination of the camber line immediately in the rear of the second bent portion on the side of a blade root is substantially equal to the inclination of the camber line immediately in front of the first bent portion, and the curvature of the second bent portion is decreased from the side of the blade root toward a blade tip. As a result, a higher-pressure portion on the intrados which is a pressure surface of the turbine blade is displaced toward the trailing edge, and thus a secondary flow from the side of the blade tip toward the blade root can be suppressed, whereby a pressure loss particularly in the vicinity of the blade root can be suppressed to the minimum.

公开(公告)号：US07597544B2

公开(公告)日：2009-10-06

申请号：US11294372

申请日：2005-12-06

申请人： Martina Hasenjäger ,  Bernhard Sendhoff ,  Toyotaka Sonoda ,  Toshiyuki Arima

发明人： Martina Hasenjäger ,  Bernhard Sendhoff ,  Toyotaka Sonoda ,  Toshiyuki Arima

IPC分类号： F03B3/12

CPC分类号： F01D5/141 ,  Y02T50/673 ,  Y10S416/02 ,  Y10S416/05

摘要： A first bent portion bent toward an intrados and a second bent portion located in the rear of the first bent portion and bent toward an extrados are provided on a camber line on a trailing edge in the rear of 90% of a chord length of a turbine blade having an extremely low aspect ratio for an axial-flow turbine. The inclination of the camber line immediately in the rear of the second bent portion on the side of a blade root is substantially equal to the inclination of the camber line immediately in front of the first bent portion, and the curvature of the second bent portion is decreased from the side of the blade root toward a blade tip. As a result, a higher-pressure portion on the intrados which is a pressure surface of the turbine blade is displaced toward the trailing edge, and thus a secondary flow from the side of the blade tip toward the blade root can be suppressed, whereby a pressure loss particularly in the vicinity of the blade root can be suppressed to the minimum.

摘要翻译： 在位于第一弯曲部分的后部并朝向外侧弯曲的第一弯曲部分和第二弯曲部分设置在涡轮的90％的弦长的后部的后缘的外倾线上 叶片具有用于轴流涡轮机的非常低的纵横比。 立即在第二弯曲部分的叶片根部侧的后方的倾斜度基本上等于在第一弯曲部分的正前方的弯度线的倾斜度，并且第二弯曲部分的曲率是 从叶片根侧向叶片尖端减小。 结果，作为涡轮叶片的压力表面的突起内的高压部分向后缘移动，因此可以抑制从叶片侧的侧向叶片根部的二次流，由此， 特别是叶片根部附近的压力损失可以被抑制到最小。

公开(公告)号：US09659122B2

公开(公告)日：2017-05-23

申请号：US12166568

申请日：2008-07-02

申请人： Lars Graning ,  Markus Olhofer ,  Bernhard Sendhoff

发明人： Lars Graning ,  Markus Olhofer ,  Bernhard Sendhoff

IPC分类号： G06F17/50 ,  F01D5/14 ,  G06F17/10

CPC分类号： G06F17/504 ,  F01D5/141

摘要： A computer-implemented method of analyzing data representing the optimization of real-world designs of physical entities according to at least one criterion. Different modifications of the design are generated by a cyclic optimization algorithm. The design data is represented by unstructured triangular surface meshes. A displacement measure representing local differences between two design modifications of the different modifications is calculated. Performance difference between the two design modifications is calculated. The performance difference is represented by at least one criterion. Sensitivity information representing correlation between the displacement measure and the performance differences is outputted.

公开(公告)号：US08009164B2

公开(公告)日：2011-08-30

申请号：US11853289

申请日：2007-09-11

申请人： Bernhard Sendhoff ,  Markus Olhofer ,  Stefan Menzel

发明人： Bernhard Sendhoff ,  Markus Olhofer ,  Stefan Menzel

IPC分类号： G06T15/00

CPC分类号： G06T19/20 ,  G06T2219/2021

摘要： A method for modifying an object design using a computer comprises the steps of: selecting a first sub-design of the object design comprising a first free form deformation geometry and a first free deformation control volume that is variable and adaptive; choosing a second sub-design comprising a second free form deformation geometry; and replacing the first geometry with the second geometry.

摘要翻译： 一种使用计算机修改对象设计的方法包括以下步骤：选择所述对象设计的第一子设计，所述第一子设计包括第一自由形状变形几何和可变和自适应的第一自由变形控制体; 选择包括第二自由形变形几何的第二子设计; 并用第二个几何体替换第一个几何体。

公开(公告)号：US20090012752A1

公开(公告)日：2009-01-08

申请号：US12166568

申请日：2008-07-02

申请人： Lars Graning ,  Markus Olhofer ,  Bernhard Sendhoff

发明人： Lars Graning ,  Markus Olhofer ,  Bernhard Sendhoff

IPC分类号： G06F17/50 ,  G06F15/18

CPC分类号： G06F17/504 ,  F01D5/141

摘要： A computer-implemented method of analyzing data representing the optimization of real-world designs of physical entities according to at least one criterion. Different modifications of the design are generated by a cyclic optimization algorithm. The design data is represented by unstructured triangular surface meshes. A displacement measure representing local differences between two design modifications of the different modifications is calculated. Performance difference between the two design modifications is calculated. The performance difference is represented by at least one criterion. Sensitivity information representing correlation between the displacement measure and the performance differences is outputted.

摘要翻译： 一种计算机实现的方法，用于根据至少一个标准分析表示物理实体的真实世界设计的优化的数据。 通过循环优化算法生成不同的设计修改。 设计数据由非结构化三角形表面网格表示。 计算表示不同修改的两个设计修改之间的局部差异的位移测量。 计算两个设计修改之间的性能差异。 性能差异由至少一个标准表示。 输出表示位移测量与性能差异之间的相关性的灵敏度信息。

公开(公告)号：US08098244B2

公开(公告)日：2012-01-17

申请号：US11683910

申请日：2007-03-08

申请人： Markus Olhofer ,  Stefan Menzel ,  Bernhard Sendhoff

发明人： Markus Olhofer ,  Stefan Menzel ,  Bernhard Sendhoff

IPC分类号： G06T15/00

CPC分类号： G06T17/30

摘要： An improved method for optimizing a design, based on direct manipulations of the object points of a design. In addition, the number and modifications of control points is kept as minimal as possible while the targeted movement of object points is realized and the automatic adaptation and generation of a set of control points for deformations which allows the movement of object points to desired positions. One aspect of the invention is to generate the transformation function f which is optimized to be able to realize desired changes of object parameters by means of control point variations. This optimization can be realized in a way that the mapping between the original coordinate system of the design and the spline coordinate system is not changed, so that no additional “freezing” process (the generation of the mapping between the coordinate systems) is necessary.

摘要翻译： 一种基于对设计对象点的直接操纵来优化设计的改进方法。 此外，在实现对象点的目标移动的同时，控制点的数量和修改被保持尽可能小，并且自动适应和生成用于变形的一组控制点，其允许物体点移动到期望的位置。 本发明的一个方面是生成变换函数f，该变换函数被优化以能够通过控制点变化来实现对象参数的期望变化。 可以以不改变设计原始坐标系和样条坐标系之间的映射的方式来实现这种优化，从而不需要额外的“冻结”过程（坐标系之间的映射生成）。