Process for reducing the turbulent drag in conduits and around submerged objects
US3938536A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Oct 11, 1974 |
| Grant date | Feb 17, 1976 |
| Priority date | — |
| Expiry date | Oct 11, 1994 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T137/0391
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
1. The reduction of turbulent drag of fluids flowing through conduits such as pipelines, channels, troughs and streams, or of drag on an object which is moving relative to a fluid, which comprises adding to said fluid a mixture of soluble polymeric substances and of suspended fibers. 2. Process fluids, consisting of the above-mentioned mixtures of dissolved polymers and suspended fibers, which exhibit decreased pressure losses under conditions of turbulent flow as compared to the carrier liquid but which exhibit heat or mass transfer rates which are of the same magnitude as those of the unmodified carrier liquid. That is, process fluids for which the heat transfer rate per unit of pumping power required is greater than that exhibited by the carrier fluid.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.