This describes the development of a new fuel flowmeter. Among the desired features were an accuracy of ±2%, a linear response to fuel flow rate, a means of increasing the sensitivity at the low end of the meter scale and portability so that it would be equally useful in the...
We show how a distributed borehole flowmeter can be created from armored Fiber Optic
cables with the Active-Distributed Temperature Sensing (A-DTS) method. The principle is that in a flowing
fluid, the difference in temperature between a heated and unheated cable is a function of the fluid velocity.
We outline the...
Full Text:
flowmeter can be created from armored Fiber Optic
cables with the Active-Distributed Temperature Sensing (A
We show how a distributed borehole flowmeter can be created from armored Fiber Optic
cables with the Active-Distributed Temperature Sensing (A-DTS) method. The principle is that in a flowing
fluid, the difference in temperature between a heated and unheated cable is a function of the fluid velocity.
We outline the...
We show how a distributed borehole flowmeter can be created from armored Fiber Optic
cables with the Active-Distributed Temperature Sensing (A-DTS) method. The principle is that in a flowing
fluid, the difference in temperature between a heated and unheated cable is a function of the fluid velocity.
We outline the...
A combined experimental and computational fluid dynamics (CFD) study of single-phase liquid nitrogen flow through a microscale pin-fin heat sink is presented. Such cryogenic heat sinks could find use in applications such as high performance computing, spacecraft thermal management, and hydrogen storage thermal management. A circular pin fin heat sink...
From July 1985 to April 1987 the pelagic zooplankton community of Crater Lake, Oregon was studied to determine taxonomic structure, absolute and relative densities, and spatial and temporal distributional patterns. Samples were collected using vertically-towed zooplankton nets. The community structure consisted of two cladoceran and nine rotifer species, which were...
A unique mass-flow control system for the carrier gas
in gas chromatography is described and evaluated. Carrier
gas flow is controlled by a flow sensor, feedback electronics,
a flow-control valve and a microcomputer. The
flow-rate is monitored by a mass-flow meter by this system
and the flow is adjusted in...
An experimental packed distillation column was constructed
and data were taken to evaluate the effects of heating sections of the
column packing during the distillation operation. The experimental
column was packed with carbon Raschig rings and the heating was
accomplished using an induction coil. The carbon tetrachloride and
benzene system...
We develop an approach for measuring in-well fluid velocities using point electrical heating combined with spatially and temporally continuous temperature monitoring using distributed temperature sensing (DTS). The method uses a point heater to warm a discrete volume of water. The rate of advection of this plume, once the heating is...
