A model was built to simulate liquid aluminum leakage during the casting process,including transient trough flow,orifice outflow,and spread,to prevent the explosion.A comparison between the simulation data and the the...A model was built to simulate liquid aluminum leakage during the casting process,including transient trough flow,orifice outflow,and spread,to prevent the explosion.A comparison between the simulation data and the theoretical calculation results verifies that the model has remarkable adaptability and high accuracy.Although the height of liquid aluminum in the mixing furnace and outlet radius are changed,the molten aluminum will not leak during the casting process.The aluminum in the trough moves forward in a wave-like motion and causes a leakage.The spread of the leaked aluminum resembles a long strip on the ground.The leakage amount and spread area of liquid aluminum increase with increasing the height of liquid aluminum in the mixing furnace.展开更多
The problem of efficient gas lift for gas well annulus packers that rely on their own energy plungers is considered.The complex related gas-liquid problem is addressed in the frame of model where the gas inflow dynami...The problem of efficient gas lift for gas well annulus packers that rely on their own energy plungers is considered.The complex related gas-liquid problem is addressed in the frame of model where the gas inflow dynamics and liquid inflow dynamics of the considered shale gas wells are weakly coupled.On this basis,and with the aiding support of indoor simulation experimental data,a new gas plunger lift design taking into account liquid leakage is obtained.Finally,a dedicated software relying on this approach is developed and used to verify the reliability of the model by means of field examples.展开更多
Owing to the advantages of non-volatility,outstanding fluidity and easy recyclability,ionic liquid-based electronics,such as thermometer,strain sensors and thermoelectric converters,have been growing as attractive alt...Owing to the advantages of non-volatility,outstanding fluidity and easy recyclability,ionic liquid-based electronics,such as thermometer,strain sensors and thermoelectric converters,have been growing as attractive alternatives to traditionally solid electronics.The fluidic character endows the ionic liquid-based circuit with self-healing ability,satisfying the needs of longer lifetime and less waste generation for electronics,while at the same time brings the risk of leakage.Avoiding the leakage without sacrifice of self-healing ability is one of the major challenges for constructing ionic liquid-based electronic devices.In this feature article,we summarize our recent progresses in developing two types of self-healing electrical devices based on ionic liquids with little risk of leakage.One type involves the encapsulation of ionic liquids in self-healing polymers,and the other type uses ionic polymers or free-standing ionic liquids which are successfully formulated as intrinsically conductive,self-healing,and recyclable electronic devices without additional encapsulation.In the end,a comprehensive outlook is prospected for the future development of ionic liquid-based self-healing electronics,which is expected to spur more innovative work in this field.展开更多
基金The authors are grateful for the financial supports from the National Key R&D Program of China(2017YFC0805100).
文摘A model was built to simulate liquid aluminum leakage during the casting process,including transient trough flow,orifice outflow,and spread,to prevent the explosion.A comparison between the simulation data and the theoretical calculation results verifies that the model has remarkable adaptability and high accuracy.Although the height of liquid aluminum in the mixing furnace and outlet radius are changed,the molten aluminum will not leak during the casting process.The aluminum in the trough moves forward in a wave-like motion and causes a leakage.The spread of the leaked aluminum resembles a long strip on the ground.The leakage amount and spread area of liquid aluminum increase with increasing the height of liquid aluminum in the mixing furnace.
基金The authors would also like to acknowledge the support provided by the National Natural Science Fund Project(62173049)Major National Projects(2016ZX05056004-002).
文摘The problem of efficient gas lift for gas well annulus packers that rely on their own energy plungers is considered.The complex related gas-liquid problem is addressed in the frame of model where the gas inflow dynamics and liquid inflow dynamics of the considered shale gas wells are weakly coupled.On this basis,and with the aiding support of indoor simulation experimental data,a new gas plunger lift design taking into account liquid leakage is obtained.Finally,a dedicated software relying on this approach is developed and used to verify the reliability of the model by means of field examples.
基金supported by the National Natural Science Foundation of China(No.21825503)the Research Funds of Renmin University of China(No.2021030196).
文摘Owing to the advantages of non-volatility,outstanding fluidity and easy recyclability,ionic liquid-based electronics,such as thermometer,strain sensors and thermoelectric converters,have been growing as attractive alternatives to traditionally solid electronics.The fluidic character endows the ionic liquid-based circuit with self-healing ability,satisfying the needs of longer lifetime and less waste generation for electronics,while at the same time brings the risk of leakage.Avoiding the leakage without sacrifice of self-healing ability is one of the major challenges for constructing ionic liquid-based electronic devices.In this feature article,we summarize our recent progresses in developing two types of self-healing electrical devices based on ionic liquids with little risk of leakage.One type involves the encapsulation of ionic liquids in self-healing polymers,and the other type uses ionic polymers or free-standing ionic liquids which are successfully formulated as intrinsically conductive,self-healing,and recyclable electronic devices without additional encapsulation.In the end,a comprehensive outlook is prospected for the future development of ionic liquid-based self-healing electronics,which is expected to spur more innovative work in this field.
