Abstract. To improve the bearing capacity and provide mathematical model basis for vibration noise reduction of variable hyperbolic circular-arc-tooth-trace (VH-CATT) cylindrical gear, tooth surface modification design method based on parabolic forming blade cutter inclination was proposed. The geometric inclined completed. modified equation deduced, influence parameters curvature characteristi...

The spatial structure of a swirling turbulent flow has been investigated based on the three-component laser Doppler anemometry method in an isothermal laboratory model four-vortex furnace. vortex cores with shape deformed vertical elliptical cylinder is visualized using ?minimum total pressure? criterion. spectrum velocity pulsations indicates absence unsteady periodic structures, which means o...

The transmission device is composed of rotary motion mechanism and vertical mechanism. synchronous belt planetary gear train upper lower connecting arms to ensure that the product rotates 90° counterclockwise 90°clockwise; cylinder, ball spline technology. flexibly implanted into curriculum with carrier new technology process, which feeds back teaching, takes thought politics as guide implement...

Abstract The flow structure in a model of promising four-vortex furnace is investigated using three-dimensional laser Doppler anemometry method (3D-LDA). Using the “minimum total pressure” criterion, vortex was visualized: core looks like deformed elliptical cylinder. Results has been compared with early PIV experiments and showed good agreement. mathematical for full-scale numerical studies ca...