Adverse Free-Stream Conditions for Transonic Airfoils with Concave Arcs

Kuzmin, Alexander

doi:10.1007/978-3-642-17884-9_117

Cited by 4 publications

(3 citation statements)

References 7 publications

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“…Therefore, the NavierStokes equation of computation fluid dynamics can be used for this investigation. The mass and momentum conservation equations for the flow field of through-active-mask electrochemical machining are [19] = 0,…”

Section: Computation Model Of Fluidmentioning

confidence: 99%

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Distribution Manner of Compaction Circular Cylinders in Through-Active-Mask Electrochemical Machining

Wang

Zheng

et al. 2014

Advances in Mechanical Engineering

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Electrochemical machining is widely used in the processing of difficult-to-machine metal materials. And through-mask electrochemical machining is a very important technology in the processing array structure of difficult-to-cut metal materials. Traditional through-mask electrochemical machining always uses a photoresist as the mask. The production process of a mask is complicated, and the mask cannot be reused. In this paper, through-active-mask electrochemical machining to process array structure in difficult-to-machine metal materials was investigated. Compared with traditional electrochemical machining masks, a copper-clad laminate is used to make the mask by mechanical machining in through-active-mask electrochemical machining. Also, the mask does not stick together with the workpiece but covers the workpiece by mechanical compaction, so the mask can be reused. In order to ensure the mask is in close contact with the workpiece, we need to arrange many compaction circular cylinders within the flow channel. The influences on electrolyte flow of compaction circular cylinders were investigated. The distribution of the compaction circular cylinders affects the electrolyte flow state, thereby affecting the processing. By analyzing the electrolyte flow state for the different distributions of compaction circular cylinders, one can find the best distribution of compaction circular cylinders for the required processing.

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Section: Computation Model Of Fluidmentioning

confidence: 99%

“…Therefore, a renormalization group (RNG) -turbulence model is used, which is suitable for high Reynolds number flow problems. Turbulent dissipation rate is introduced to (1), and through a RNG method one obtains the RNG -model [19]. The turbulent kinetic energy equation and dissipation rate equation of this model are…”

Section: Computation Model Of Fluidmentioning

confidence: 99%

Distribution Manner of Compaction Circular Cylinders in Through-Active-Mask Electrochemical Machining

Wang

Zheng

et al. 2014

Advances in Mechanical Engineering

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“…This phenomenon was scrutinised for a number of symmetric profiles (6)(7)(8)(9) and an asymmetric J-78 aerofoil whose upper surface is nearly flat in the midchord region (6,10) . Also the instability was explored for the Apex 16 and Boeing 737 Outboard aerofoils whose lower surfaces comprise nearly flat arcs (10,11) . In addition, Kuzmin and Ryabinin (10) examined transonic flow past the Whitcomb aerofoil with an upward deployment of an aileron at Re = 5•6 × 10 6 .…”

Section: Introductionmentioning

confidence: 99%

Transonic aerofoils admitting anomalous behaviour of lift coefficient

Kuzmin¹,

Ryabinin

2014

Aeronaut. j. (1968)

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Transonic flow past a Boeing 737 Outboard aerofoil and Whitcomb one with a deflected aileron is studied. The flow simulation is based on the system of Reynolds-averaged Navier-Stokes equations. The numerical study demonstrates the existence of free-stream conditions in which small perturbations produce abrupt changes of the lift coefficient. Also the simulation reveals adverse conditions in which aileron deflections have no influence on the lift.

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Calculation of transonic flow past the twisted wings

Ryabinin

2015

2015 International Conference on Mechanics - Seventh Polyakhov's Reading

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Adverse Free-Stream Conditions for Transonic Airfoils with Concave Arcs

Cited by 4 publications

References 7 publications

Distribution Manner of Compaction Circular Cylinders in Through-Active-Mask Electrochemical Machining

Distribution Manner of Compaction Circular Cylinders in Through-Active-Mask Electrochemical Machining

Transonic aerofoils admitting anomalous behaviour of lift coefficient

Calculation of transonic flow past the twisted wings

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