Accession Number : AD0722262

Title :   Evaluation of Friction Reducing Additives for Pipeline Use.

Descriptive Note : Final technical rept. 28 Jun 68-28 Jun 70,

Corporate Author : COLUMBIA RESEARCH CORP GAITHERSBURG MD

Personal Author(s) : Crowley,Patrick A. ; Witbeck,Norman C.

Report Date : OCT 1970

Pagination or Media Count : 47

Abstract : A large number of additives were checked for friction reducing ability in a turbulently flowing petroleum based fluid. Several pipelines of various lengths and diameters were used and the efficiency of effective additives was measured as a function of concentration. By subjecting the additives to a sever-shear environment, an estimate of the degradation characteristics was obtained. The most promising materials appear to be high molecular weight polymers, particularly polyisobutylene and polydimethylsiloxane. In the course of the present effort, it was demonstrated that these additives are effective in pipelines of the size and with the flow velocity of commercial and military pipelines and under conditions not detrimental to the fuel usage or equipment can enhance the flow rate by as much as 50%. (Author)

Descriptors :   (*ADDITIVES, SKIN FRICTION), (*SKIN FRICTION, REDUCTION), (*PIPES, FLUID FLOW), TURBULENCE, POLYMERS, EFFICIENCY, MOLECULAR WEIGHT, SILOXANES, POLYETHYLENE PLASTICS

Subject Categories : Fluid Mechanics

Distribution Statement : APPROVED FOR PUBLIC RELEASE