As an important branch of information technology, high-performance computing has expanded its application field and its influence has been expanding. High-performance computing is always a key area of application in meteorology. We used field research and literature review methods to study the application of high performance computing in China's meteorological department, and obtained the following results: 1) China Meteorological Department gradually established the first high-performance computer system since 1978. High-performance computing services can support operational numerical weather prediction models. 2) The Chinese meteorological department has always used the relatively advanced high-performance computing technology, and the business system capability has been continuously improved. The computing power has become an important symbol of the level of meteorological modernization. 3) High-performance computing technology and meteorological numerical forecasting applications are increasingly integrated, and continue to innovate and develop. 4) In the future, high-performance computing resource management will gradually transit from the current local pre-allocation mode to the local remote unified scheduling and shared use. In summary, we have come to the conclusion that the performance calculation business of the meteorological department will usher in a better tomorrow.
This paper adopts Finite Volume Method, with the aid of GT-POWER platform, building the joint model of engine with cracking sound attenuation coupler. Based on the correctness of verification model, we research the cracking sound attenuation coupler’s influence on exhaust noise with engine performance. The results show that the muffler causes little power loss for engine at low and medium speed. At high speed the muffler brings power loss to engine mainly coming from muffler tail. Comparing with original muffler in the aspects of noise elimination performance and engine performance is not obvious effect and at the meantime providing a feasible technology method for realizing high efficiency and cleaning burning of methanol.
The purpose of this paper is to analyze the working principle of folding machine and it also explains the working mode of the stepper motor. Basing on these, the control-system of folding machine is designed. It is through the AT89C52 MPU and the corresponding circuit of periphery to control the two stepper motors. So it can drive the feeding roller and the paper roller to overlay in accordance with the predefined size. The system achieves the automation of folding. It not only reduces the labor, but also improves the efficiency and accuracy of folding. It has a very broad application prospect.
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