Browsing by Author "White, Robert"
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Item Texas A&M University's Laboratory for the Exploration of Atmospheric Processes-TAMU's LEAP(American Meteorological Society, 1996-12-01) Nielsen-Gammon, John; Biggerstaff, Michael; Alcorn, Marion; Austin, Daniel; Bowman, Kenneth; Djuric, Dusan; Guynes, Jerry; Panetta, Richard; White, Robert; Wicker, LouisImprovements in computer technology, particularly the explosive growth of Internet applications, have created unprecedented educational opportunities, but with concomitantly little experience on how educators can best take advantage of them. The Laboratory for the Exploration of Atmospheric Processes (LEAP) is a new 15-workstation computer laboratory operated by the Department of Meteorology at Texas A&M University. The setup and use of LEAP in a variety of undergraduate and graduate courses are described. Particular emphasis is placed on applications that use the World Wide Web or specialized meteorological software, with the aims of fostering greater discussion of computer-based teaching methods in meteorology and sharing and improvement of Web-based teaching materials.Item TUTORIAL: SURGE CONTROL AND DYNAMIC BEHAVIOR FOR CENTRIFUGAL GAS COMPRESSORS(Turbomachinery Laboratory, Texas A&M Engineering Experiment Station, 2015) Kurz, Rainer; White, Robert; Brun, Klaus; Winklemann, BernhardThis tutorial discusses the design and function of surge control systems, or more precisely, surge avoidance systems on the basis of the behavior of centrifugal compressors when they interact with compression systems. Therefore, the control system, as well as the phenomenon of surge and stall is discussed. The paper emphasizes the interrelation between the process system and the compressor. Regarding the compressor, different methods of controlling the compressor are discussed, together with different operating regions like stall and choke. The differences between stall and surge are explained. Additionally, the impact of the process and how the process dynamics interact with the compressor is analyzed, categorized, and explained. Based on the above, process control and in particular, surge control systems are discussed. Critical features of surge control systems are explained, and options for different arrangements are given.