EXPERIMENTAL INVESTIGATION OF SURFACE CURRENTS’ HYDRODYNAMIC SKIN DRAG IN INTERNAL AND EXTERNAL CURRENTS

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JAFARGHOLINEJAD SH.; SADEGHI K.; PISHEVAR A.R.; MOZAFFARINIA R.; ALIZADEH T.

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Seminar Paper

Paper Information

Seminar: INTERNATIONAL CONFERENCE ON COASTS, PORTS AND MARINE STRUCTURES (ICOPMAS) PORTS & MARITIME ORGANIZATION
Year:2008 | Issue:8

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Title

EXPERIMENTAL INVESTIGATION OF SURFACE CURRENTS’ HYDRODYNAMIC SKIN DRAG IN INTERNAL AND EXTERNAL CURRENTS

Author(s)

JAFARGHOLINEJAD SH. | SADEGHI K. | PISHEVAR A.R. | MOZAFFARINIA R. | ALIZADEH T.

Keywords

SKIN DRAG

AERIAL AND MARINE APPLICATIONS

SIMPLE INSTRUMENTS

Abstract

SKIN DRAG IS AN IMPORTANT STRATEGY BOTH IN AERIAL AND MARINE APPLICATIONS FOR REDUCING FUEL COSTS AND ACHIEVING OPTIMAL OPERATIONS. THIS PHENOMENON HAS BEEN SUBJECT OF MANY ACADEMIC RESEARCHES. A LARGE NUMBER OF AUTHORS HAVE ALREADY FOCUSED ON ITS APPLICATIONS IN FLIGHT, SUB-MARINE JOURNEYS, MARINE TRANSPORTATION, AND SPEED INCREASE IN CURRENTS INSIDE PIPELINES ETC. RECENT STUDIES PROVED HIGH CAPACITY OF POLYMERS TO REDUCE SKIN DRAG. HOWEVER, NO SERIOUS EFFORTS HAVE ALREADY BEEN MADE CONCERNING THE NATURE OF SKIN DRAG REDUCTION PHENOMENON. WATER/WIND CHANNELS ARE USED IN STUDIES OVER SKIN DRAG IN EVEN SURFACES. DIFFICULTY IN MAKING ARRANGEMENTS FOR LONG-TERM AND HIGH ENERGY CONSUMPTION MAKES IT INEVITABLE TO SIMPLIFY THESE EXPERIMENTS. THIS ARTICLE FOCUSES ON HOW IT IS POSSIBLE TO SIMPLIFY DRAG ASSESSMENT PROCESS BY MEANS OF INTRODUCING SOME PRACTICAL INSTRUMENTS. CYLINDER AND ROTARY DISC ARE TWO SIMPLE INSTRUMENTS THAT HAVE BEEN USED IN THIS RESEARCH. THESE INSTRUMENTS CAN BE USED INSTEAD OF WIND/WATER CHANNELS. INITIAL ASSESSMENTS INDICATE THAT POLYMER DILUTED SOLUBLE CAN REDUCE DRAG NO LESS THAN APPROXIMATELY 10 PERCENT IN REYNOLDS SCALE.

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APA: Copy

JAFARGHOLINEJAD, SH., SADEGHI, K., PISHEVAR, A.R., MOZAFFARINIA, R., & ALIZADEH, T.. (2008). EXPERIMENTAL INVESTIGATION OF SURFACE CURRENTS’ HYDRODYNAMIC SKIN DRAG IN INTERNAL AND EXTERNAL CURRENTS. INTERNATIONAL CONFERENCE ON COASTS, PORTS AND MARINE STRUCTURES (ICOPMAS). SID. https://sid.ir/paper/908241/en

Vancouver: Copy

JAFARGHOLINEJAD SH., SADEGHI K., PISHEVAR A.R., MOZAFFARINIA R., ALIZADEH T.. EXPERIMENTAL INVESTIGATION OF SURFACE CURRENTS’ HYDRODYNAMIC SKIN DRAG IN INTERNAL AND EXTERNAL CURRENTS. 2008. Available from: https://sid.ir/paper/908241/en

IEEE: Copy

SH. JAFARGHOLINEJAD, K. SADEGHI, A.R. PISHEVAR, R. MOZAFFARINIA, and T. ALIZADEH, “EXPERIMENTAL INVESTIGATION OF SURFACE CURRENTS’ HYDRODYNAMIC SKIN DRAG IN INTERNAL AND EXTERNAL CURRENTS,” presented at the INTERNATIONAL CONFERENCE ON COASTS, PORTS AND MARINE STRUCTURES (ICOPMAS). 2008, [Online]. Available: https://sid.ir/paper/908241/en

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