984 resultados para Taylor, Charles, 1931-
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一位科学家的工作提供了一门完整课程的素材,涉及从流体动力学稳定性、湍流到流体电动力学、微生物的运动.
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Charles M. Breder and his wife Ethel spent part of the summer of 1942 at the Palmetto Key field station, known today as Cabbage Key, on the west coast of Florida south of Charlotte Harbor. The Palmetto Key field station began in 1938 and ended in 1942 because of World War II. His Palmetto Key diary ran for 95 pages of notes, tables, diagrams, drawings, lists, and business records and this report presents a variety of fascinating entries. Diaries from other years all bear Breder's style of discipline, curiosity, humor, and speculations on nature. The diary was transcribed as part of the Coastal Estuarine Data/Document Rescue and Archeology effort for South Florida. (PDF contaons 24 pages)
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Atos do Governo Provisório
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During the summer of 1929, Dr. Charles M. Breder, Jr., employed at that time by the New York Aquarium and American Museum of Natural History, visited the Carnegie Laboratory in the Dry Tortugas to study the development and habits of flying fishes and their allies. The diary of the trip was donated to the Mote Marine Laboratory Library by his family. Dr. Breder's meticulous handwritten account gives us the opportunity to see the simple yet great details of his observations and field experiments. His notes reveal the findings and thoughts of one of the world's greatest ichthyologists. The diary was transcribed as part of the Coastal Estuarine Data/Document Rescue and Archeology effort for South Florida. (PDF contains 75 pages)
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Dr. Charles M. Breder, a well known ichthyologist, kept meticulous field diaries throughout his career. This publication is a transcription of field notes recorded during the Bacon Andros Expeditions, and trips to Florida, Ohio and Illinois during the 1930s. Breder's work in Andros included exploration of a "blue hole", inland ecosystems, and collection of marine and terrestrial specimens. Anecdotes include descriptions of camping on the beach, the "filly-mingoes" (flamingos) of Andros Island, the Marine Studios of Jacksonville, FL, a trip to Havana, and the birth of seahorses. This publication is part of a series of transcriptions of Dr. Breder's diaries. (PDF contains 55 pages)
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Dr. Charles M. Breder participated on the 1934 expedition of the Atlantis from Woods Hole, Massachusetts to Panama and back and kept a field diary of daily activities. The Atlantis expedition of 1934, led by Prof. A. E. Parr, was a milestone in the history of scientific discovery in the Sargasso Sea and the West Indies. Although naturalists had visited the Sargasso Sea for many years, the Atlantis voyage was the first attempt to investigate in detailed quantitative manner biological problems about this varying, intermittent ‘false’ bottom of living, floating plants and associated fauna. In addition to Dr. Breder, the party also consisted of Dr. Alexander Forbes, Harvard University and Trustee of the Woods Hole Oceanographic Institution (WHOI); T. S. Greenwood, WHOI hydrographer; M. D. Burkenroad, Yale University’s Bingham Laboratory, carcinology and Sargasso epizoa; M. Bishop, Peabody Museum of Natural History, Zoology Dept., collections and preparations and H. Sears, WHOI ichthyologist. The itinerary included the following waypoints: Woods Hole, the Bermudas, Turks Islands, Kingston, Colon, along the Mosquito Bank off of Nicaragua, off the north coast of Jamaica, along the south coast of Cuba, Bartlett Deep, to off the Isle of Pines, through the Yucatan Channel, off Havana, off Key West, to Miami, to New York City, and then the return to Woods Hole. During the expedition, Breder collected rare and little-known flying fish species and developed a method for hatching and growing flying fish larvae. (PDF contains 48 pages)
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界面不稳定是自然界和工业中流动的普遍现象。本文以Rayleigh-Taylor不稳定性为范例,说明基于物理思想的CFD方法在流动问题研究中的应用。为了确定自由面,以往的Lagrange坐标法、阵面跟踪法在界面发生大变形时都会失效。同时,因流动不稳定从层流发展到湍流要经历若干阶段。因此,如何追踪演化过程的界面变形和如何确定湍流模型是R-T不稳定性研究中的主要困难。本文将溶质浓度差异视为导致介质轻重不同的原因,在不稳定发展过程中发生对流和混合。我们提出采用被动标量的大涡模拟方法来模拟R-T不稳定。鉴于该物理模型考虑了流体粘性和物质扩散的影响,可以自动确定阵面,完整描述不稳定从线性小扰动阶段、经过非线性变形阶段、剪切不稳定阶段到湍流混合阶段,真实重现了现象的物理过程,所以更为优越。通过比较尖钉和气泡阵面前进速度和计算亚格子分量的份
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3 cartas (manuscritas) ; entre 210x265mm y 161x222mm. Ubicación: Caja 1 - Carpeta 23
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1 tarjeta y 1 carta (manuscritas y mecanografiadas) ; entre 146x92mm y 135x215mm. Ubicación: Caja 1 - Carpeta 31
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10 cartas (manuscritas y mecanografiadas) ; entre 213x203mm y 335x227mm. Ubicación: Caja 1 - Carpeta 33
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10 cartas (manuscritas y mecanografiadas) ; entre 208x124mm y 213x275mm. Ubicación: Caja 1 - Carpeta 33
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A computational simulation is conducted to investigate the influence of Rayleigh-Taylor instability on liquid propellant reorientation flow dynamics for the tank of CZ-3A launch vehicle series fuel tanks in a low-gravity environment. The volume-of-fluid (VOF) method is used to simulate the free surface flow of gas-liquid. The process of the liquid propellant reorientation started from initially flat and curved interfaces are numerically studied. These two different initial conditions of the gas-liquid interface result in two modes of liquid flow. It is found that the Rayleigh-Taylor instability can be reduced evidently at the initial gas-liquid interface with a high curve during the process of liquid reorientation in a low-gravity environment.