Download PDF by Daniel D. Joseph (auth.), Harold Ramkissoon (eds.): IUTAM Symposium on Lubricated Transport of Viscous

By Daniel D. Joseph (auth.), Harold Ramkissoon (eds.)

ISBN-10: 9401062080

ISBN-13: 9789401062084

ISBN-10: 9401152489

ISBN-13: 9789401152488

The major aim of the 1st foreign Symposium on Lubricated shipping of Viscous fabrics used to be to collect scientists and engineers from academia and industryto speak about present learn paintings and trade rules during this newly rising box. it truly is a space offluid dynamics dedicated to laying naked the principlesofthe lubricated shipping of viscous fabrics reminiscent of crude oil, centred oil/water emulsion, slurries and pills. It encompasses various kinds of challenge. reports of migration of particulates clear of partitions, Segre-Silverberg results, lubrication as opposed to elevate and shear-induced migration belong to 1 class. a number of the technological difficulties are the fluid dynamics ofcore flows emphasizing experiences ofstability, difficulties of start-up, lift-off and whimsical stream the place gravity motives the center movement to stratify. one other class of difficulties offers with the fouling of pipe partitions with oil, with bad raises in strain gradients or even blockading. This learn comprises topics like adhesion and dynamic touch angles. the subjects ofshear-induced diffusion ofsmall debris and wall slip in gradual circulate are different applicable topics. laptop­ in depth studiesofflow-induced microstructures and relocating interface difficulties are but extra learn instructions. the final consensus used to be that the Symposium was once a massive good fortune, even if the variety of shows fell under expectancies. Scientists from the petroleum undefined, and this comprises INTEVEP (Venezuela), Schlumberger and Syncrude Canada Ltd. , and experts to grease businesses actively participated within the Symposium. The assembly produced new insights which should still result in extra attention-grabbing study paintings and tested contacts for possiblejoint investigations.

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Extra resources for IUTAM Symposium on Lubricated Transport of Viscous Materials: Proceedings of the IUTAM Symposium held in Tobago, West Indies, 7–10 January 1997

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4 DATA ACQUISITION/ CONTROL SYSTEM The hardware for the data acquisition system was composed of a Macintosh computer, an analog multiplexer AMUX-64T, and a high resolution multifunction I/O board model NB-MIO-16H-18. 1) data acquisition program. A total of 31 sensor signals, including eight (8) differential pressures, three (3) absolute pressures, sixteen (16) temperature indicators, and two (2) mass flow sensors, each providing measurements of mass flow rate and fluid density, were connected by a Centronics-type wiring to an AMUX-64T analog multiplexer capable of handling up to 32 differential input signals.

Differential pressures at six (6) locations along the 50-m (lM-ft) loop inner test pipe, and at two (2) locations along the reference pipes were measured with differential pressure transducers. Pressures at the inlet and outlet of the outer test pipe were measured with pressure indicators. Oil temperatures at ten (10) locations along the test pipe were measured using thermocouples. Temperatures of the oil at the inlet and outlet reference pipes, and temperatures of the cooling water at the inlet and outlet of the concentric test pipe were measured using Resistance Temperature Detectors (RIDs).

39 ion pai r of the stat ion ary bed , the circ ulat 5( a),( b). Aft er the esta blis hme nt . ran ge of pre sen t calc ulat ion are rem aine d(F ig. 80 87m /s at (a) t=O, (b) t=0. 40, (c) psho ts of the part icles for Ujo =O. 3. Sna Figure and (d) t=1. 20 sec. Figure dire ction 4· Flui d velocity profile in long itud inal for U jO =O. 87m /s at t=0. 40 sec. '"::. -", .. -:'. 25 ec. 15 sec. 40 s c. Figure 5. 2. STABLE FLOW PATTERN Comparison of the flow patterns between two different velocities around the critical velocity Uc was made.

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IUTAM Symposium on Lubricated Transport of Viscous Materials: Proceedings of the IUTAM Symposium held in Tobago, West Indies, 7–10 January 1997 by Daniel D. Joseph (auth.), Harold Ramkissoon (eds.)


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