Simulation and Analysis for Cooling System of High-Speed Motorized Spindle

2014 ◽  
Vol 945-949 ◽  
pp. 1677-1680
Author(s):  
Chun Li Lei ◽  
Zhi Yuan Rui ◽  
Yin Cheng Zhou
Keyword(s):  
High Speed ◽  
Cooling System ◽  
Water Channel ◽  
Cooling Effect ◽  
Water Cooling ◽  
Motorized Spindle ◽  
Heat Transfer Theory ◽  
Nc Machine ◽  
Manufacturing Accuracy ◽  
Water Cooling System

In order to improve the manufacturing accuracy of NC machine tool, it is crucial to reducing the temperature rise of high-speed motorized spindle. The cooling effect and temperature distribution of water-cooling system are simulated and analyzed based on thermodynamics, heat transfer theory and computational fluid dynamics in this paper. The results show that the cooling system has fine cooling effect; the temperature of cooling liquid is changed from low to high and then to decrease, the highest temperature is at the roundabout of helical water channel and the reason for this phenomenon is found out. The results provide the theory basis for the structure optimization for water-cooling system.

Research on the Cooling System of High-Speed Motorized Spindle

2014 ◽  
Vol 716-717 ◽  
pp. 1707-1710
Author(s):  
Chun Li Lei ◽  
Zhi Yuan Rui ◽  
Te Li ◽  
Qin Wu
Keyword(s):  
Heat Flux ◽  
Flow Velocity ◽  
High Speed ◽  
Simulation Experiment ◽  
Cooling System ◽  
Orthogonal Experiment ◽  
Motorized Spindle ◽  
Heat Transfer Theory ◽  
Flow Velocity Of Coolant ◽  
Matching Relation

In order to control effectively the temperature of the motorized spindle, based on thermodynamics, heat transfer theory and fluid dynamics control theory, the model of motorized spindle with cooling system is established and simulated. Based on the idea of orthogonal experiment and simulation experiment, the comprehensive tests are built, and the optimum matching relation between the heat flux of motor and the flow velocity of cooling liquid is determined in this article. The results show that the flow velocity of coolant can be adjusted according to the heat flux of motor which can control the temperature in the steady range and improves the cooling effect.

scholarly journals Thermoelectric-based cooling system for high-speed motorized spindle I: Design and control mechanism

2021 ◽  
Author(s):  
Fan Kai-Guo ◽  
Jianying Xiao ◽  
Ruoda Wang ◽  
Rui Gao
Keyword(s):  
Heat Conduction ◽  
Heat Generation ◽  
High Speed ◽  
Cooling System ◽  
Cooling Capacity ◽  
Motorized Spindle ◽  
Thermoelectric Refrigeration ◽  
Electric Current Passing ◽  
And Control ◽  
Water Cooling System

Abstract With the increase of spindle speed, heat generation becomes the crucial problem of high-speed motorized spindle. A new cooling system for motorized spindle is proposed based on the principles of thermoelectric refrigeration and fast heat conduction. The main strategy of the proposed ThermoElectric-based Cooling System (TECS) is using the ThermoElectric Cooler (TEC) to cool the spindle through a Heat Conduction Sleeve (HCS). The TEC is designed according to the heat generation of motorized spindle. The cooling capacity generated by the TEC is controlled by electric current passing through the TEC according to the temperature rise of HCS. The HCS is designed to distribute the cold quickly and is installed around the spindle sleeve working as cooling medium. The simulation results show that the cooling effect of the proposed TECS is better than water water-cooling system. It is meaningful to improve the accuracy of motorized spindle.

Design and analysis of a water-cooling system in a new YASA in-wheel motor for electric vehicles

2021 ◽  
pp. 1-12
Author(s):  
Liang Luo ◽  
Jiujian Chang ◽  
Jinglai Wu ◽  
Bo Zhu ◽  
Minyi Zheng ◽  
...  
Keyword(s):  
Cooling System ◽  
Low Cost ◽  
Cooling Effect ◽  
Water Cooling ◽  
Driving System ◽  
Water Path ◽  
Impact Performance ◽  
Fluid Resistance ◽  
Fluid Flow Velocity ◽  
Water Cooling System

Abstract An in-wheel motor, as a key part of an in-wheel driving system, needs to satisfy strict restriction on thermal balance for increasingly high-power density in limited space and weight. Therefore, a new in-wheel motor with an innovative water-cooling system for one newly developed electric vehicle was developed. Based on mechanical structure of the motor, all potential water-cooling layouts were firstly designed with consideration of mechanical strength and manufacturability. A thermal conjugate simulation model of the developed in-wheel motor was then built and its thermally fluid-solid interactions were investigated in this study. All potential water-path layouts of the motor were compared regarding cooling effect and fluid resistance, which impact performance of the motor. Fluid flow velocity and fluid state, determined by the water-path layout, significantly impact cooling effect of the motor. The well-designed water-cooling system significantly reduces motor's temperature at a low cost on required coolant driven pressure which benefits the efficiency of the developed motor. A prototype of the developed motor with the optimal water-path layout was built and tested on the test rig. The developed motor provides outstanding thermal performance.

scholarly journals Investigation of the thermal effect of a tubular permanent magnet actuator with a water cooling channel for active lateral suspension of a high-speed train

2019 ◽  
Vol 11 (3) ◽  
pp. 168781401881966
Author(s):  
Dong-wook Kim ◽  
Jung-Hyun Woo ◽  
Kyoung-Su Park
Keyword(s):  
Permanent Magnet ◽  
High Speed ◽  
Ride Comfort ◽  
Cooling System ◽  
Operating Conditions ◽  
Design Parameters ◽  
Water Cooling ◽  
Transfer Coefficients ◽  
Permanent Magnet Actuator ◽  
Water Cooling System

Worldwide, high-speed rail is becoming an increasingly popular and efficient means of transport. However, increasing the speed of a train leads to major reductions in stability and ride comfort. Here, we develop a tubular permanent magnet actuator to overcome these problems. To increase actuator thrust, the electromagnetic circuit requires a high current and, thus, becomes hot. We use a water cooling system with 12 straight copper channels to reduce the temperature. We calculate heat transfer coefficients using empirical convection correlations between laminar flow in the channels and experimental results. The predicted, tube surface temperatures correlated well with the experimental data. We evaluated the effects of flow rate and initial water temperature on various design parameters. The cooling system allowed application of a current greater than 100 A, developing a thrust force of over 8000 N. Thus, the system was robust under harsh operating conditions. We measured the thrust and cogging forces and the performance of the water cooling system in terms of the maximum acceptable temperature. The thrust was high and the cogging torque was low, greatly reducing lateral vibration; the temperature remained below the acceptable maximum.

Analysis on the Effects of Cooling Water Velocity on Temperature Rise of Motorized Spindle

2014 ◽  
Vol 543-547 ◽  
pp. 68-71 ◽  
Author(s):  
Nan Chen ◽  
Ke Zhang ◽  
Li Xiu Zhang ◽  
Yu Hou Wu
Keyword(s):  
Simulation Analysis ◽  
Cooling System ◽  
Cooling Water ◽  
Water Velocity ◽  
Cooling Effect ◽  
Motorized Spindle ◽  
Theoretical Derivation ◽  
Ansys Cfx ◽  
The Difference ◽  
Water Cooling System

In order to obtain the optimal cooling water velocity, the relationship between motor spindle temperature and cooling water velocity was derived by using the heat transfer and fluid mechanics. When the cooling water velocity was relatively small, its change has significantly influence on cooling effect; But when the cooling water velocity was relative large, the difference in cooling effect was inappreciable. Motor spindles water cooling system based on the software of ANSYS CFX was established. The cooling water velocity and temperature distribution in circular channel was analyzed. Motor spindle temperature of theory and simulation was compared under different cooling water velocity; Experiments were conducted according to the results of the simulation, Experimental temperature is consistent with simulation results, which verify the validity of motorized spindle simulation analysis and theoretical derivation. The study in this paper provides a reference for the motorized spindle selecting the rational velocity of cooling water.

Analysis of Sensor-Lance Samples for Basic Oxygen Furnace Control

1980 ◽  
Vol 34 (4) ◽  
pp. 447-452 ◽  
Author(s):  
T. R. Linde
Keyword(s):  
High Speed ◽  
Cooling System ◽  
High Volume ◽  
Basic Oxygen Furnace ◽  
Water Cooling ◽  
Steelmaking Process ◽  
Basic Oxygen ◽  
Furnace Control ◽  
Increase Productivity ◽  
Water Cooling System

As part of a new basic oxygen furnace (BOF) steelmaking control system, procedures were developed for rapidly handling and accurately analyzing steel samples taken with a sensor-lance from an upright vessel. Determinations must be: (1) accurate to control the steelmaking process and assure that the heats are made to specifications, and (2) rapid to reduce BOF turnabout time and thus provide the potential to increase productivity. A pneumatic tube carrier was developed to safely transport hot (2200°F) lance samples to the laboratory. The samples are cut and cooled simultaneously on a high-speed abrasive cutoff machine equipped with a specially designed sample clamp and a high-volume water cooling system. Initially, the analytical performance was not as good as that obtained from conventional cast disk samples. Analysis deviations were traced to large slag-type sulfur-bearing inclusions in the lance samples. Accurate analyses were then obtained by increasing the spectrometer preburn time from 3 to 15 s. More than 1000 trial heats have been made. The procedures we developed permit hot samples to be removed from the lance sampler, sent to the laboratory, analyzed, and reported in about 3 minutes.

scholarly journals Design and thermal characteristic analysis of motorized spindle cooling system

2021 ◽  
Vol 13 (5) ◽  
pp. 168781402110208
Author(s):  
Yuan Zhang ◽  
Lifeng Wang ◽  
Yaodong Zhang ◽  
Yongde Zhang
Keyword(s):  
Flow Rate ◽  
High Speed ◽  
Thermal Deformation ◽  
Cooling System ◽  
Thermal Characteristic ◽  
Water Flow Rate ◽  
Thermal Characteristics ◽  
Characteristic Analysis ◽  
Motorized Spindle ◽  
Experiment And Simulation

The thermal deformation of high-speed motorized spindle will affect its reliability, so fully considering its thermal characteristics is the premise of optimal design. In order to study the thermal characteristics of high-speed motorized spindles, a coupled model of thermal-flow-structure was established. Through experiment and simulation, the thermal characteristics of spiral cooling motorized spindle are studied, and the U-shaped cooled motorized spindle is designed and optimized. The simulation results show that when the diameter of the cooling channel is 7 mm, the temperature of the spiral cooling system is lower than that of the U-shaped cooling system, but the radial thermal deformation is greater than that of the U-shaped cooling system. As the increase of the channel diameter of U-shaped cooling system, the temperature and radial thermal deformation decrease. When the diameter is 10 mm, the temperature and radial thermal deformation are lower than the spiral cooling system. And as the flow rate increases, the temperature and radial thermal deformation gradually decrease, which provides a basis for a reasonable choice of water flow rate. The maximum error between experiment and simulation is 2°C, and the error is small, which verifies the accuracy and lays the foundation for future research.

Multi-Objective Optimization Analysis of Motor Cooling System in Articulated Dump Truck

2011 ◽  
Vol 383-390 ◽  
pp. 4715-4720
Author(s):  
Yan Zhang ◽  
Yan Hua Shen ◽  
Wen Ming Zhang
Keyword(s):  
Field Distribution ◽  
Cooling System ◽  
Dump Truck ◽  
Water Cooling ◽  
Multi Objective Optimization ◽  
Multi Objective ◽  
Pareto Optimal Set ◽  
Temperature And Pressure ◽  
Water Cooling System ◽  
Optimal Set

In order to ensure the reliable and safe operation of the electric driving motor of the articulated dump truck, water cooling system is installed for each motor. For the best performance of the water cooling system, not only the heat transfer should be enhanced to maintain the motor in relatively low temperature, but also the pressure drop in the water cooling system should be reduced to save energy by reducing the power consumption of the pump. In this paper, the numerical simulation of the cooling progress is completed and the temperature and pressure field distribution are obtained. The multi-objective optimization model is established which involves the cooling system structure, temperature field distribution and pressure field distribution. To improve the computational efficiency, the surrogate model of the simulation about the cooling process is established based on the Response Surface Methodology (RSM). After the multi-objective optimization, the Pareto optimal set is obtained. The proper design point, which could make the average temperature and pressure drop of the cooling system relative desirable, is chosen from the Pareto optimal set.

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