Fluid machinery is a kind of general machinery, which is widely used in petroleum, chemical industry, aerospace, water conservancy, national defense and other industrial fields. It is the core component of equipment, such as fuel supply device in satellite launching power, transportation equipment in mines and crude oil exploitation, and power equipment in large-scale water conservancy projects. The discipline of fluid mechanics studies the fluid dynamics principle and design of mechanical equipment with fluid as working medium and energy carrier, as well as the experiment and numerical simulation of complex flow phenomena related to fluid dynamics. During the long-term research of fluid dynamics, research and design of fluid machinery and equipment, pipeline corrosion of multiphase flow, flow measurement and development of instruments and equipment, the discipline of fluid machinery and engineering in our university has formed four distinctive research directions: dynamic research of multiphase fluid and jet injection, fluid transportation and measurement technology, energy-saving and noise-reducing technology of fluid transportation machinery, and erosion failure prediction technology of multiphase flow.
Research direction of fluid machinery specialty in Zhejiang Sci-Tech University: multiphase fluid dynamics and jet injection.
This paper mainly studies the dynamic problems of fiber suspension flow field, gas-liquid/gas-solid flow field, spray jet two-phase flow and underwater supersonic gas jet, reveals the flow law of complex flow phenomena, and puts forward the control method of flow field, which provides theoretical basis for developing high-performance and high-reliability air-jet loom and underwater high-speed fluid machinery. This research direction has been supported by four national natural funds and 1 national top 973 research project, and the research results won the first prize of Zhejiang Science and Technology Award in 2006.
Research direction of fluid machinery specialty in Zhejiang Sci-Tech University: fluid transportation and metering technology.
Mainly research and develop gas-liquid and solid-liquid two-phase fluid transportation mechanism, high-performance transportation equipment and fluid metering instruments. Combined with the advantages and characteristics of the industry, the research and development of key technologies of fluid conveying equipment and measuring instruments such as solid-liquid and gas-liquid two-phase centrifugal pumps, low specific speed centrifugal pumps and ultrasonic flowmeters have been carried out. It is at the advanced level in China in small flow and high lift fluid transportation technology and ultrasonic flow measurement. The developed chemical process centrifugal pump has formed a series of products in domestic pump companies and has been widely used. The research direction is responsible for 1 key projects and 4 general projects of national natural fund. Published 2 1 academic papers, of which 10 was included by SCI and EI.
Research direction of in-service graduate students of fluid machinery in Zhejiang Sci-Tech University: energy-saving and noise-reducing technology of fluid conveying machinery.
This paper mainly studies the flow loss in fluid machinery, establishes the relationship between external characteristics and geometric parameters and flow parameters, predicts the performance of fluid machinery, and establishes a design method of fluid machinery based on three-dimensional flow analysis with efficiency as the goal. The methods to improve the noise and vibration of fluid machinery are put forward, which provides a theoretical basis for the optimal design of efficient fluid machinery. This research direction was supported by the National Natural Science Foundation of China and the Excellent Youth Team of Provincial Funds, and published 15 academic papers.
Research direction of fluid machinery specialty of Zhejiang Sci-Tech University: prediction technology of erosion damage of multiphase flow.
The mathematical model of fluid-solid coupling erosion damage of complex pipelines is established, and the prediction method of multiphase flow erosion damage based on fluid-solid coupling analysis of corrosion product protective film is given. Combined with simulated erosion test, the life prediction of multiphase flow pipeline system is realized. Supported by four national natural science foundations and 1 863 plan, he published 30 academic papers, 20 of which were included by SCI and EI, and won the second prize of Zhejiang Science and Technology in 2006.
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