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- W2322492747 abstract "I. ABSTRACT Impact on water by a rigid body is considered because the important process which accompanies the entry of a rigid body in water was overlook in preceding studies. As a matter of fact during the initial stage of the blunted body entry in water, the perimeter of the wetted surface moves with a supersonic velocity along the body surface. It means that the liquid particles inflow in the vicinity of the disturbed zone perimeter also with supersonic relative velocity, allowing for the possibility for formation of the attached shock to the perimeter of the wetted surface. These reasonings lead to the statement of the problem, taking into account the aforementioned process for the axisymmetric entry in water of the spherical blunted rigid body. Within the framework of the of the accurate shock wave theory with utilization of both Tait’s EOS with exponent n = 7 and an equivalent to EOS well-known relationship D = C + Su (s = 2 for water), the flowfield behind the shock wave attached to the perimeter of the wetted surface was defined. It turned out that the solution with attached shock wave exists for the arbitrary impact velocity. Investigation was conducted with the impact velocity in the range from 200 to 1200 m/s. As an important result one notes that the peak pressure arises at the points on the body surface, moved away from the point of headon shock wave origin (stagnation point). The maximum values of the peak pressure are by 1.6 – 2.1 times higher (depending on the impact velocity) than the peak pressure values at the stagnation point. The revealed effect changes the common notion that the maximum pressure peak is reached in the stagnation point." @default.
- W2322492747 created "2016-06-24" @default.
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- W2322492747 date "2005-05-16" @default.
- W2322492747 modified "2023-09-25" @default.
- W2322492747 title "On Origin of a Maximum Pressure Peak Outside of the Stagnation Point at Normal Impact of a Blunted Body on Water" @default.
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- W2322492747 doi "https://doi.org/10.2514/6.2005-3203" @default.
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