Asset Details
Do you wish to reserve the book?
Research on the unsteady flow characteristics of high specific speed axial flow impellers with small aspect ratio and double blades
Hey, we have placed the reservation for you!
By the way, why not check out events that you can attend while you pick your title.
Oops! Something went wrong.
Looks like we were not able to place the reservation. Kindly try again later.
Are you sure you want to remove the book from the shelf?
Research on the unsteady flow characteristics of high specific speed axial flow impellers with small aspect ratio and double blades
Do you wish to request the book?
Research on the unsteady flow characteristics of high specific speed axial flow impellers with small aspect ratio and double blades
Please be aware that the book you have requested cannot be checked out. If you would like to checkout this book, you can reserve another copy
We have requested the book for you!
Your request is successful and it will be processed during the Library working hours. Please check the status of your request in My Requests.
Oops! Something went wrong.
Looks like we were not able to place your request. Kindly try again later.
Journal Article
Research on the unsteady flow characteristics of high specific speed axial flow impellers with small aspect ratio and double blades
2025
Overview
High specific speed impeller with low aspect ratio is ideal for high-speed pump-jet propulsion. This study investigates its unsteady hydrodynamic characteristics using experimental and numerical methods. At the design flow rate (Q
d
), the pressure amplitude at the blade’s leading and trailing edges varies significantly along the streamline. Blade shape minimally affects flow velocity but significantly impacts leading-edge pressure fluctuations. For the mainstream, the highest fluctuation peak occurs at 0.9Q
d
. The pressure amplitude gradually decreases from blade’s shroud to hub. Along circumferential direction the minimum pressure amplitude is located in the middle of the two blades. In gap flow, the leading-edge pressure peaks at Q
d
, with fluctuations primarily at 5 times and 10 times the rotation frequency. Meanwhile, pressure fluctuations in the tip clearance’s height direction exhibit a consistent distribution, reaching their maximum at the leading edge. Vortex structure analysis using various Q criteria reveals that increasing Q enhances vortexes in the impeller while reducing them in the diffuser. Moreover, flow rates result in a simultaneous decrease in vortexes within both components, while the pressure distribution on the isotropic vortex surface remained stable.
Publisher
Nature Publishing Group UK,Nature Publishing Group,Nature Portfolio
