Optimization Design and Analysis of Supersonic Tandem Rotor Blades

Pan, Ruochi; Song, Zhaoyun; Liu, Bo

doi:10.3390/en13123228

Cited by 6 publications

(5 citation statements)

References 11 publications

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“…The results showed that flutter is realized when the natural frequency of the structure is close to the transient frequency mode of the IGV. Pan et al 12 evaluated the optimal design of a tandem blade under ultrasonic flow for NASA rotor 37 and studied the secondary flow and the resulting shock wave after the blade. Evaluations showed that the use of tandem leads to an increase in mass flow rate and surge margin and a decrease in efficiency.…”

Section: Literature Reviewmentioning

confidence: 99%

Investigation of the Difference Between Ordinary and FSI Numerical Solution for Flutter of Tandem Compressor

Benis,

Togh

2023

The International Journal of Acoustics and Vibration

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This research aims to analyze and compare the flutter of turbine compressor blades from experimental, numerical, and fluid structure interaction (FSI) derived data. The results proved that the FSI solution results are closer to the experimental results. A reduced velocity parameter of 5 can be regarded as the flutter boundary in the bending flutter. Additionally, the incidence angle parameter equal to 1.5 can be characterized as the torsional flutter boundary. Tandem leads to strengthening the load applied on the compressor blades, reducing the number of compressor stages, and ultimately reducing the weight of the engine. Adding tandem to the rotor increases the vibration bending frequency by a factor of 2. Increasing the compressor velocity caused the FSI vibration frequency to be close to the experimental results. It was found that the vibration range of the main rotor is greater than that of the tandem. The vibration of the rotor and the tandem is damped for approximately 0.1 s to reach a constant frequency.

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Section: Literature Reviewmentioning

confidence: 99%

Investigation of the Difference Between Ordinary and FSI Numerical Solution for Flutter of Tandem Compressor

Benis,

Togh

2023

The International Journal of Acoustics and Vibration

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“…In their approach, the design of the experiment, a response surface model, a genetic algorithm, and computational-fluid-dynamics analysis tools were combined together to provide an integrated optimization system. Pan et al [10] developed a multiobjective optimization methodology, which were based on the Kriging model, the physical programming method, and improved particle swarm optimization algorithm, and applied to achieve the multiobjective optimization of the supersonic tandem rotor blades. These methods combine numerical optimization with numerical calculation of flow fields.…”

Section: Introductionmentioning

confidence: 99%

Aerodynamic Optimization Design of a Supersonic Compressor Rotor with High Pressure Ratio

Cui

Zhou

Liu

2021

International Journal of Aerospace Engineering

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Supersonic compressors have a high wheel speed and operational capability, which facilitate a high stage pressure ratio. However, the strong shock waves in the passage of a supersonic rotor and the interference between shock waves and boundary layers can lead to large flow loss and low efficiency. Moreover, the existing design of a high-load supersonic compressor has the problem of small stall margin. In this study, an automatic optimization method including 2D profile optimization and 3D blade optimization is proposed to achieve a high efficiency at the design point of a supersonic compressor rotor under the premise of reaching the desired mass flow rate and total pressure ratio. According to the analysis of flow near the stall point of the supersonic compressor rotor, the mechanism responsible for rotor tip stall is established, that is, the aerodynamic throat appeared inside the flow passage, reducing the ability of the blade tip to withstand back pressure, and the low-speed areas caused by the tip-leakage-vortex breakage and boundary layer separation reduced the flow capacity of the blade tip. Based on the reasons for rotor stall, three methods are proposed to improve the stall margin, which include increasing the exit radius of the upper meridian, forward sweep of the blade tip, and increasing the chord length of the blade tip. The above method is used to design a supersonic rotor with a total pressure ratio of 2.8, which exhibits an efficiency of 0.902 at the design point and a stall margin of 18.11%.

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“…The optimization design of modern solenoid valves faces more and more challenges with increasing performance requirements to realize higher latching force, higher output force, and more extensive robustness [1][2][3][4][5][6][7][8][9]. As a means of simulation, the FEM method has the absolute advantage of accuracy, and the disadvantage of efficiency.…”

Section: Introductionmentioning

confidence: 99%

Improved Method for Distributed Parameter Model of Solenoid Valve Based on Kriging Basis Function Predictive Identification Program

et al. 2021

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In this paper, a method for the improvement of the calculation accuracy of the distributed parameter model (DPM) of electromagnetic devices is proposed based on the kriging basis function predictive identification program (PIP). Kriging is mainly an optimal interpolation method which uses spatial self-covariance, and takes a polynomial as the basis function. The accuracy of the kriging-based surrogate model can be improved by adjusting the related functions and hyperparameters. Based on the DPM of a solenoid valve, there exist certain errors in the estimation. They can be summarized as follows: Firstly, the estimation error of magnetic flux leakage (MFL) permeance is caused directly by the deviation of the magnetic flux tube due to the segmented magnetic field line. Secondly, the estimation error of soft magnetic resistance because of the nonlinearity of the permeability of soft magnetic material leads to the change of soft magnetic resistance alongside the magnetic flux. In this paper, an improved kriging error correction method is applied to modify the leak permeance and soft magnetic resistance calculation. The kriging basis function is adjusted to adapt to the data curve of the MFL permeance error data. The calculated MFL permeance data are compared with the error variation data to select the appropriate basis function. To improve the computational efficiency, the PIP is proposed to select the appropriate basis function. The modified MFL permeance data and soft magnetic resistance are substituted into the DPM for improving the computational accuracy and efficiency of the solenoid valve.

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Optimization Design and Analysis of Supersonic Tandem Rotor Blades

Cited by 6 publications

References 11 publications

Investigation of the Difference Between Ordinary and FSI Numerical Solution for Flutter of Tandem Compressor

Investigation of the Difference Between Ordinary and FSI Numerical Solution for Flutter of Tandem Compressor

Aerodynamic Optimization Design of a Supersonic Compressor Rotor with High Pressure Ratio

Improved Method for Distributed Parameter Model of Solenoid Valve Based on Kriging Basis Function Predictive Identification Program

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