In this study, a hybrid algorithm combining genetic algorithm （GA） with back propagation （BP） neural network （GA-BP） was proposed for extracting the characteristics of multi-peak Brillouin scattering spectrum. S...
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In this study, a hybrid algorithm combining genetic algorithm （GA） with back propagation （BP） neural network （GA-BP） was proposed for extracting the characteristics of multi-peak Brillouin scattering spectrum. Simulations and experimental results show that the GA-BP hybrid algorithm can accurately identify the position and amount of peaks in multi-peak Brillouin scattering spectrum. Moreover, the proposed algorithm obtains a fitting degree of 0.9923 and a mean square error of 0.0094. Therefore, the GA-BP hybrid algorithm possesses a good fitting precision and is suitable for extracting the characteristics of multi-peak Brillouin scattering spectrum.
To improve the jet performance of a fire water monitor, the monitor head with three different inner contour lines were designed. Based on FLUENT, the calculation domain was defined geometrically and then the cloud pic...
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ISBN:
(纸本)9781510872745
To improve the jet performance of a fire water monitor, the monitor head with three different inner contour lines were designed. Based on FLUENT, the calculation domain was defined geometrically and then the cloud pictures of the flow velocity, pressure, turbulence kinetic energy and multiphase flow of the fluid field in the nozzle and jet were obtained, based on which the optimal structure of each model can be selected. The simulation result can provide the theoretical reference for the design of a monitor head.
Calculation of the critical condition for the initiation of DRX is of considerable interest for the modeling of industrial processes but it strongly depends on the chemical composition of the material, the grain size ...
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The matching of the pilot valve and multi-way valve is a prerequisite for the pilot control in the engineering machinery. Based on hydraulic pilot control system of a certain bulldozer actuator and the principle of th...
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The matching of the pilot valve and multi-way valve is a prerequisite for the pilot control in the engineering machinery. Based on hydraulic pilot control system of a certain bulldozer actuator and the principle of the pilot control system, we analyze the matching relationship between the pilot valve and multi-way valve. The parameters that influence the hydraulic pilot control system are summarized and the simulation model of pilot control system is built according to the actual parameters of components. The matching relationship of the hydraulic pilot control system is researched by experiments and simulation, which will provide theoretical guidance for the design of the pilot valve and multi-way valve that used in the engineering machinery.
The equipment and transportation safety will be affected greatly by the wind in the process of the large-scale precision equipment transited *** the numerical simulation analysis of the ex
The equipment and transportation safety will be affected greatly by the wind in the process of the large-scale precision equipment transited *** the numerical simulation analysis of the ex
More and more extra large equipment transport is achieved by means of joint operation of large scale engineering *** of the characteristics of high quality,large bulk,irregular size an
More and more extra large equipment transport is achieved by means of joint operation of large scale engineering *** of the characteristics of high quality,large bulk,irregular size an
Through the descriptions and effect evaluations of the compliance of self-adaption suspension group systems in selfpropelled transport,a kind of self-adaption suspension group system was improved and
Through the descriptions and effect evaluations of the compliance of self-adaption suspension group systems in selfpropelled transport,a kind of self-adaption suspension group system was improved and
To improve the jet performance of a fire water monitor,the monitor head with three different inner contour lines were *** on FLUENT,the calculation domain was defined geometrically and then
To improve the jet performance of a fire water monitor,the monitor head with three different inner contour lines were *** on FLUENT,the calculation domain was defined geometrically and then
In order to evaluate the hydraulic performance of a regulator,the pressure loss and the stabilization performance of the regulator installed in the fire water monitor were *** effects of st
In order to evaluate the hydraulic performance of a regulator,the pressure loss and the stabilization performance of the regulator installed in the fire water monitor were *** effects of st
In this paper, a 2R1T (two rotations and one translation) over-constrained parallel mechanism R(2RPR)R/SP with two ordered continuous rotational axes is proposed, which contains fewer joints, by concatenating a 2-degr...
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