Abstract: 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.

Abstract: An initial object shape is set in a first process, a numeric fluid dynamic grid is generated on the surface of the object shape in a second process, and Navier-Stokes equations are numerically solved by numerical fluid dynamics based on the object and the grid generated with the object shape and an object surface pressure is determined in a third process. The noise generated by the object is a determined in a fourth process, by solving Curle's formula based on the object surface pressure, and noises are again determined in a fifth process by updating the object shape and repeating the first through fourth processes. By determining an object shape based on a shape which generates the smallest noise from among the noises determined by the fifth process, it becomes possible to determine a shape of the object as a shape capable of minimizing aerodynamic noise generated upon movement of the object through a fluid medium.

Abstract: A base member is laid in a space portion, which is defined by an instrument panel, in a vehicle width direction over generally an entire width of the vehicle, and a plurality of ducts is integrally formed with the base member. Furthermore, a meter placing portion on which a meter is placed and an air bag placing portion on which an air bag is placed are formed on the base member, and a harness placing portion on which a flat harness is placed is also formed on the base member in the vehicle width direction. Accordingly, the base member with which the plurality of ducts are integrally formed is a separate body from the instrument panel. Even in the case where the size of the instrument panel is changed, the base member is not required to correspond to the instrument panel and, therefore, the ducts can be commonly used. Moreover, since the base member is formed with ducts each having a closed structure in section, it has a predetermined physical strength.

Abstract: A base member is laid in a space portion, which is defined by an instrument panel, in a vehicle width direction over a generally entire width of the vehicle, and a plurality of ducts is integrally formed with the base member. Furthermore, a meter placing portion, on which a meter is placed, and an air bag placing portion, on which an air bas is placed, are formed on the base member, and a harness placing portion 26, on which a flat harness is placed, is also formed on the base member in the vehicle width direction. Accordingly, the base member with which the plurality of ducts is integrally formed is a separate body from the instrument panel. Even in the case where the size of the instrument panel is changed, the base member is not required to correspond to the instrument panel and, therefore, the ducts can be commonly used. Moreover, since the base member is formed with ducts each having a closed structure, in section, it has a predetermined physical strength.