35 results about "Thermodynamic equations" patented technology

Methods and systems for thermodynamic evolution. Adaptive control systems are constructed based on the property of volatile matter to self-organize to maximize the dissipation of energy. The logical state of sensory nodes in a node circuit are set and projected into a network. Then, the system evaluates logical state of processing nodes by summing input currents of processing nodes and project processing node's state into network. The strength of processing node is increased such that logical state of sensory node matches with logical states of processing node by utilizing plasticity rule. The system is configured to maximize energy dissipation by creating weight structures to stabilize nodes with logical state. The internal positive feedback of node circuit forces competition between nodes such that one node is driven to high logical state and other nodes to low logical state.

The device comprises a means for measuring a dynamic temperature on the outside of the aircraft, a means for determining a static temperature around the aircraft, using said dynamic temperature, a means for determining, using said static temperature and a thermodynamic equation, a second temperature value corresponding to an estimated temperature at said destination altitude, a means for determining the difference between said first and second temperature values, and a means for emitting a warning signal when said difference is greater than a predetermined value.

The invention discloses a physics-based three-dimensional cloud motion evolution method, which belongs to the field of computer graphics. The method takes two natural cumulus images as input, and can realize automatic motion evolution from an initial three-dimensional cumulus shape to a target shape. Firstly, the three-dimensional cumulus model is reconstructed from two given natural images of cumulus, and the particle sampling is performed on the first three-dimensional cumulus model to obtain cloud particle data; secondly, the thermodynamic equation and state of cumulus in the process of atmospheric movement are solved Change equations and motion equations to realize the physical movement process of cumulus clouds; again, use the PBF method to maintain the density of cloud particles during the movement process to ensure the incompressibility of cumulus clouds during the movement process; then, through the target shape Surface particle sampling, combined with the fluid-solid interaction strategy, realizes the coupling between cloud particles and the target shape; finally, according to the motion state of the cumulus before and after the time frame, the external force received by the cumulus during the movement is adjusted, and the physical movement process of the cumulus is driven until The final shape matches the target shape.

The invention discloses a non-steady-state prediction method for preheating and putting into production of a long-distance crude oil pipeline containing waxy crude oil. Based on a body-fitted grid method based on differential equations, a body-fitted grid structure corresponding to the long-distance crude oil pipeline is obtained; based on the Body-fitted grid structure, transforming the heat transfer equation and boundary conditions in the preheating and commissioning mathematical model into calculation heat transfer equations and calculation boundary conditions on the calculation plane; discretizing the calculation heat transfer equation and the calculation boundary conditions , to obtain the discrete equation; use the alternating direction iteration method to solve the discrete equation to obtain the thermal system equation; substitute the hot water parameters into the thermal system equation to obtain the soil heat storage corresponding to the soil corresponding to the long-distance crude oil pipeline; When the heat storage amount in the soil is not less than the preset heat storage amount, the time corresponding to the heat storage amount in the soil is determined as the oiling time.

The invention discloses a compressor type selection method suitable for supercharged hydrogen internal combustion engines. Through a given target value and the basic parameters of an engine, the fuel, entering an air cylinder, of the conventional engines is liquid and does not generate partial pressure; the hydrogen internal combustion engines take hydrogen as fuel, and after entering the air cylinder, the gas fuel generates partial pressure and the influences, caused by the partial pressure generated by the gas fuel, on the pressure ratio calculation of the compressor is considered; therefore, according to the method disclosed in the invention, the partial pressure, in the air cylinder, of the hydrogen and the air is calculated to serve as total pressure in the air cylinder, and then the pressure ratio of the compressor is calculated; moreover, a plurality of compressor outlet temperatures are selected in a reasonable range according to experience values at the outlet of the compressor, after obtaining the pressure ratio, a theoretical value of the compressor outlet temperature is obtained through a thermodynamic equation, and the pressure ratio obtained when the selected experience value of the compressor outlet temperature is approximately equal to the thermodynamic equation is taken as the final result, so that the modification of the temperature after the supercharging is realized and more accurate result can be obtained.

The invention discloses a method for testing the dew point temperature of humidification reaction gas of a fuel cell, which comprises: making a certain flow rate of reaction gas flow through a humidifier for humidification, and monitoring the temperature and pressure of the humidified reaction gas; The wet reaction gas flows into the condenser for condensation treatment, so that the reaction gas changes from an unsaturated state to a saturated state, obtain the quality of condensed water at this time, and monitor the temperature and pressure of the condensed reaction gas; use the basic thermodynamic equation and ideal The gas equation calculates the dew point temperature of unsaturated steam based on the flow rate of the reaction gas before humidification, the temperature and pressure of the reaction gas after humidification, the quality of condensed water, and the temperature and pressure of the reaction gas after condensation. The method for testing the dew point temperature of the fuel cell humidification reaction gas provided by the invention has simple measuring equipment, and the dew point temperature after gas humidification can be directly calculated through the basic laws of thermodynamics and the ideal gas state equation, so that the test result is accurate and reliable.

The invention discloses a thermodynamics circulation system achieving heat circulation through environment working media and application. The system comprises an environment working medium system and a thermodynamics circulation system body. The thermodynamics circulation system body comprises a circulating working medium evaporator, a circulating working medium expansion device, a circulating working medium condenser and a circulating working medium pump which are circularly connected in sequence. In addition, in order to convert low-level energy into high-level energy, an external heat source is further introduced. According to the thermodynamics circulation system achieving heat circulation through the environment working media, an artificial environment serves as a part of a low-temperature heat source and a high-temperature heat source of the thermodynamics circulation system body, phase change heat of the thermodynamics circulation system body can be transferred to the environment working media, the heat is transmitted to the thermodynamics circulation system body again by means of energy conversion of the environment working media, and the utilizing rate of energy is increased.