Results 41 to 50 of about 123 (91)
수중 운동체 주변에 형성되는 환기 초공동 현상에 관한 연구
, 2018 학위논문(박사) - 한국과학기술원 : 기계공학과, 2018.2,[vii, 50 p. :]Present experimental study examines ventilated supercavity formation in an unbounded or free-surface bounded environment where the body is in motion and the fluid is at rest. The experiments were conducted
Chung, Jaeho
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, 2012 Experimental results of the hydrodynamic performance of a novel high-speed hydrofoil concept are presented. The hydrofoil is symmetric, wedge shaped and makes use of a mechanism for producing a forward-facing step on either upper or lower surfaces to
Paul Brandner (14732326) +1 more
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Calculation of the 2D supercavity shape under harmonic perturbations
, 2000 Представлены результаты расчета длины и формы плоских нестационарных суперкаверн за клином при периодической зависимости от времени. Переменная длина каверны находится в последовательные моменты времени путем численного решения уравнения баланса массы ...
Семененко, В.Н.
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Experimental investigations of supercavitating regime of flow around self-propelled models
, 2000 Излагается методика и результаты экспериментального исследования суперкаверн на самоходных моделях с различными типами привода, движущихся в гидролотке по направляющей проволоке в режимах вентилируемой и естественной паровой кавитации в диапазоне ...
Власенко, Ю.Д.
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Bubbly Flow Physics for Applications in Aerated Hydroturbines and Underwater Transport
, 2016 University of Minnesota Ph.D. dissertation. May 2016. Major: Mechanical Engineering. Advisors: Jiarong Hong, Roger Arndt. 1 computer file (PDF); ix, 255 pages.Bubbly flows occur in a wide variety of situations and are frequently employed in industry ...
Karn, Ashish
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Modeling of the vortex structure inside a ventilated cavity
Дана робота присвячена проблемі моделювання примусово вентильованої газоподібної каверни в потоці рідини. Актуальність дослідження обумовлено необхідністю розвитку методів керування потоком з метою зниження опору тертя. Аналіз літературних джерел показав,
Димитрієва, Наталія Федорівна
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Study on Hydrodynamics and Modeling for a Supercavitating Vehicle in Transition Phase [PDF]
, 2013 학위논문 (석사)-- 서울대학교 대학원 : 산업·조선공학부, 2013. 8. 김낙완.초공동 수중운동체는 물과의 마찰저항을 획기적으로 줄일 수 있는 기술이다. 수중운동체를 기포로 감싸게 되면 물과의 접촉면이 줄어들어 마찰저항이 감소한다. 초공동기술은 이러한 기포를 인위적으로 크게 만들어 운동체와 물의 접촉을 완전히 제거함으로써 마찰저항에 의한 추력손실을 없애는 기술이다. 이러한 초공동기술을 통해 수중운동체는 기존의 수중속력한계를 뛰어넘게 된다. 초공동
김선홍
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FEASIBILITY ANALYSIS OF STEAM VENTILATION IN SUPERCAVITATION DESIGN
, 2015 The complete envelopment of a submerged object by a continuous cavity, or supercavity, results in significant reduction of the skin drag acting on the object, allowing for substantial increases in the maximum speeds of underwater devices.
Culberson, Austin
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Numerical simulation of ventilated supercavitating flow structure. [PDF]
Sci RepZhang J, Chen W, Li P, Liu G, Han W.
europepmc +1 more source
Examination of ventilated cavities in the wake of a two-dimensional bluff body
Ventilated cavities in the wake of a two-dimensional bluff body are studied experimentally via time-resolved X-ray densitometry. With a systematic variation of flow velocity and gas injection rate, expressed as Froude number ($Fr$) and ventilation ...
Gawandalkar, Udhav U. +5 more
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