Yonghua Wang
Changchun University of Science and Technology
Surface roughnessMorphology (linguistics)PhysicsWettingFinite element methodFabricationTorqueGroove (music)BoilingHeat fluxComposite materialComputational fluid dynamicsCylinder blockCylinder headChemical stabilityConnecting rodField (physics)Materials scienceVibrationNoise reduction coefficientTurbochargerScanning electron microscopeMilling cutterCrankshaftSoftwareConfocal microscopyPolyurethaneAlloyHeat transfer coefficientTest optimizationNanosecond laserQuadratic orderImpedance tubeAlloy surfaceSuperheatingJet engineHeat transferAluminiumMachiningMechanicsBoundary (topology)EmbedmentContact angleTemperature measurementMolar absorptivityMechanical engineeringThrustMicrostructure
8Publications
1H-index
1Citations
Publications 8
Newest
#1Liying Wang (Changchun University of Science and Technology)
#2Yonghua Wang (Changchun University of Science and Technology)H-Index: 1
Last. Jinkai Xu (Changchun University of Science and Technology)H-Index: 8
view all 5 authors...
Abstract The T-shaped groove surface with groove width of 0.3 to 1.2 mm and groove depth of 0.6 to 1.5 mm is prepared on the copper surface by using electric spark wire cutting technology, Set up a set of wall temperature measurement, bubble visualization and steady flow heating test bench. Experimental observations of boiling heat transfer of deionized water on different heat transfer surfaces are achieved. The boiling curves of T-shaped surface such as superheat, heat flux and heat transfer co...
Source
Source
#1Yonghua Wang (Changchun University of Science and Technology)H-Index: 1
#2Wen Cheng (Changchun University of Science and Technology)H-Index: 1
Last. Huadong Yu (Changchun University of Science and Technology)H-Index: 11
view all 5 authors...
The T-shaped groove and the square-column microstructure of the aluminum alloy surface were constructed by EDM. It was found that the contact angle of the square column formed by the two processes can reach 147.62°, and the surface of the part exhibits high viscosity at the same time. Successfully achieved the preparation of highly viscous hydrophobic surfaces. At the same time, solutions of different PH were prepared to further characterize the chemical stability of the samples. It is found tha...
Source
#1Haiquan Wu (Changchun University of Science and Technology)H-Index: 1
#2Yonghua Wang (Changchun University of Science and Technology)H-Index: 1
Last. Huadong Yu (Changchun University of Science and Technology)H-Index: 11
view all 5 authors...
To study the temperature of the cylinder block and cylinder head, temperature analysis was carried out for the engine based on FEM. The temperature and convection heat transfer coefficient boundary were obtained by CFD analysis. Then the engine temperature analysis was carried out by the software ANSYS and the accurate temperature field distribution is obtained which provides technical guidance for the performance improvement of each part of the engine.
Source
#1Fengyu Xu (Changchun University of Science and Technology)
#2Yonghua Wang (Changchun University of Science and Technology)H-Index: 1
Last. Huadong Yu (Changchun University of Science and Technology)H-Index: 11
view all 6 authors...
Based on the background of engine lightweight and low noise, this paper used the 3D modeling software Pro/E to build the mathematical model of a high speed engine. The finite element mesh was divided by ICEM. The structural vibration of the engine complete machine was calculated by combining finite element theory with multi-body dynamics. By using the Timing Drive and Power Unit in AVL Excite, the multi-input parameter’s coupled calculation of the gas distribution mechanism and crankshaft connec...
Source
#1Zheming Liu (Changchun University of Science and Technology)
#2Yonghua Wang (Changchun University of Science and Technology)H-Index: 1
Last. Huadong Yu (Changchun University of Science and Technology)H-Index: 11
view all 5 authors...
The polyurethane foam with different structure was prepared by one-step foaming process, and the acoustic properties of the foam were measured by impedance tube, using sound absorption coefficient as the measure index, the effects of manufacturing temperature, ratio of polyols to MDI and total mass (density) on the acoustic properties of polyurethane were analyzed by experimental optimization design. The test results show that the ratio of polyols to MDI is the most important factor affecting th...
Source
#1Yanling Wan (Changchun University of Science and Technology)H-Index: 7
#2Jian Yang (Changchun University of Science and Technology)H-Index: 1
Last. Yonghua Wang (Changchun University of Science and Technology)H-Index: 1
view all 6 authors...
The micro-groove array structure was processed by high speed precision micro-milling machine on the aluminum alloy surface. The direct relationship that milling parameters influence the surface roughness and surface burr were studied when milling the aluminum alloy surface by using micro-diameter milling cutter with a diameter of 150μm. And then the microstructure which was processed by using optimal parameters and the hydrophobic properties of aluminum alloy surface were observed. The results s...
1 CitationsSource
#1Yanling Wan (Changchun University of Science and Technology)H-Index: 7
#2Lining Xu (Changchun University of Science and Technology)H-Index: 2
Last. Yonghua Wang (Changchun University of Science and Technology)H-Index: 1
view all 5 authors...
Aluminum alloy surface was machined by nanosecond laser equipment, and the effect of different processing parameters on the microstructure of aluminum alloy surface was studied. The surface microstructure was observed by scanning electron microscopy and confocal microscopy. Surface hydrophobicity was evaluated with deionized water. The experiment results show that, by controlling the machining parameters, the surface microstructure morphology can be designed and controlled, at the same time, the...
Source