temperature profiler Articles | Environmental XPRT

Entropy analysis for MHD boundary layer flow and heat transfer over a flat plate with a convective surface boundary condition

This paper presents the application of the second law of thermodynamics analysis to magnetohydrodynamic (MHD) boundary layer flow and heat transfer over a flat plate with a convective surface boundary condition. Using a similarity solution technique and shooting quadrature, the velocity and temperature profiles are obtained numerically and utilised to compute the entropy generation number. The ...

Mar. 16, 2012

By Inderscience Publishers

Entropy generation in MHD flow over a permeable stretching sheet embedded in a porous medium in the presence of viscous dissipation

The present paper analyses the effects of entropy generation in Magnetohydrodynamic (MHD) flow over a permeable stretching sheet embedded in a porous medium in the presence of viscous dissipation. Analytical solutions of the momentum and the energy equations are obtained in terms of Kummer's function using suitable transformations. The velocity and temperature profiles are obtained for various ...

Aug. 9, 2013

By Inderscience Publishers

Numerical investigation of entropy generation in an unsteady flow through a porous pipe with suction

This paper investigates the entropy generation rates in an unsteady flow of a variable viscosity incompressible fluid through a porous pipe with uniform suction at the surface. The nonlinear governing equations for momentum and energy balance are derived and solved numerically using a semi–implicit finite difference scheme in order to obtain the fluid velocity and temperature profiles. Numerical ...

May 28, 2013

By Inderscience Publishers

Slip effects on entropy generation in MHD flow over a stretching surface in the presence of thermal radiation

The present paper deals with the study of slip effects on entropy generation in viscous incompressible flow over a stretching sheet subjected to a transverse magnetic field in the presence of thermal radiation. By using suitable similarity transformations, the momentum and the energy equations are transformed into nonlinear ordinary differential equations and series solutions are obtained using ...

Aug. 9, 2013

By Inderscience Publishers

Temperature Profiling - Real-time Snowpack Temperature Profiling at Alaska’s Turnagain Pass - Case Study

BeadedStream, in coordination with Kasteler Consulting, Inc. (KCI) and The Chugach National Forest Avalanche Information Center (CNFAIC) is in the second year of snowpack data collection at Turnagain Pass, Alaska. Problem The Seward Highway is the only thoroughfare for traffic between Anchorage, AK and the Kenai Peninsula. The road takes travelers over Turnagain Pass which is also a primary ...

Apr. 7, 2018

By BeadedStream LLC

Entropy generation analysis for Couette?Poiseuille flow through parallel-plates microchannel

This paper presents the first and second laws of thermodynamics analysis for laminar forced convective heat transfer of a Newtonian fluid in a microchannel between parallel plates. Hydrodynamically and thermally fully developed flow with constant properties is examined. Two different forms of the thermal boundary-conditions are considered. The velocity and temperature profiles are analytically ...

Sep. 21, 2009

By Inderscience Publishers

Comparing different methods of calculating volume-weighted hypolimnetic oxygen (VWHO) in lakes

In the limnological literature there is no standard method for calculating hypolimnetic volumes using temperature profile data. Consequently, calculations of hypolimnetic dissolved oxygen concentrations differ based on the method chosen. This study examined the differences in calculations of volume-weighted hypolimnetic oxygen (VWHO) concentrations based on different methodologies and profile ...

Mar. 1, 2005

By Springer-Verlag GmbH

Entropy generation due to forced convection fluid flow about a solid sphere

The problem of entropy generation for laminar fluid flow around a solid sphere subjected to uniform heat flux is investigated numerically using a finite-difference technique. The governing continuity, boundary-layer momentum and energy equations were solved. The resulting velocity and temperature profiles were used to compute the local and average entropy generation around the sphere. The two ...

Jan. 14, 2008

By Inderscience Publishers

On the estimation of transport timescales – case study: the Dez reservoir

The purpose of this study is to demonstrate an application of a hydroinformatics methodology for analysis of transport timescales in a large reservoir. Therefore, a laterally averaged two-dimensional numerical model was used to estimate the transit time, flushing times and combination of these two timescales by modeling about 230 scenarios in the Dez reservoir. The model was calibrated using ...

Feb. 15, 2011

By IWA Publishing

Second-law analysis of heat and fluid flow in microscale geometries

In this study, the second law analysis of thermodynamics is applied to two different microgeometries: microtube and microduct, between two parallel plates. Hydrodynamically and thermally fully developed flow with constant properties is examined. Microscale effects are included in the analysis in terms of the viscous dissipation, the velocity slip and temperature jump. Using the previously ...

Apr. 26, 2007

By Inderscience Publishers

Entropy analysis of laminar-forced convection in a pipe with wall roughness

Momentum and heat transfer rates, as well as entropy generation have been numerically investigated for fully developed, forced convection, laminar flow in a micro-pipe. Compressible and variable fluid property continuity, Navier-Stokes and energy equations are solved for various Reynolds number, constant heat flux and surface roughness cases; entropy generation is discussed in conjunction with ...

Mar. 23, 2009

By Inderscience Publishers

Mind the bandgap | A temperature profiling technology comparison

When it comes down to determining temperature in environmental media, there are many options—from fiber-optic to infrared sensing technologies—to observe and quantify the relative kinetic energy of a material. For single point data acquisition and a given specific temperature range and target medium, of course certain technologies are more optimal than others. When it comes to ...

Mar. 29, 2016

By BeadedStream LLC

How to Choose the Ideal Oven Temperature Logger

Read This Before You Decide On An Oven Temperature Profiling Data Logger Vendors regularly speak with customers to address the key question: “How do I choose the ideal oven temperature logger for my oven temperature application?” Whether you are an engineer planning for your next furnace temperature profiling project or a paint shop filling a requisition intended for paint testing as ...

Jul. 2, 2018

By CAS DataLoggers

How to Choose the Ideal Oven Temperature Logger

Read This Before You Decide On An Oven Temperature Profiling Data Logger Vendors regularly speak with customers to address the key question: “How do I choose the ideal oven temperature logger for my oven temperature application?” Whether you are an engineer planning for your next furnace temperature profiling project or a paint shop filling a requisition intended for paint testing as part of ...

Jul. 2, 2018

By CAS DataLoggers

Similarity theory and parameterization of mixing in the upper ocean

Boundary layers with small thermal and mechanical inertia are close to steady-state conditions. This underlies the Monin-Obukhov similarity theory and explains why the surface values of the fluxes can be chosen as external parameters. For fluids with large thermal inertia, such as the ocean, the thermal time scale is relatively large, and the density flux is a complex function of depth, thus, the ...

Jan. 1, 2005

By Springer-Verlag GmbH

Oksrukuyik Creek Deep Foundation Verification Study - Long-Term Bridge Abutment Monitoring on Alaska’s Haul Road - Case Study

Roughly 100 miles south of Deadhorse, Alaska, replacement of Oksrukuyik Creek Bridge warranted application of an ad-freeze pile design for two bridge abutments supporting the bridge deck. In light of permafrost soils and thermal influences from the creek’s thaw bulb, long term temperature profiling along the abutments was implemented to verify efficacy of the foundation design. Problem ...

Apr. 7, 2018

By BeadedStream LLC

A network suitable microwave radiometer for operational monitoring of the cloudy atmosphere

The implementation of an operational network of microwave radiometers is presently hampered by the cost and complexity of the available instruments. For this reason, the definition and design of a low-cost microwave radiometer suitable for automatic, high-quality observations of liquid water path (LWP) were one objective of the BALTEX cloud liquid water network: CLIWA-NET. In the course of the ...

Jun. 2, 2014

By RPG Radiometer Physics GmbH

Stratification & water age issues in drinking water - Case study

Overview: Customer was performing seismic retrofits on two potable water reservoirs and wanted to add active mixing as part of the overall project. Tank volumes are 500,000 to 750,000 gallons with each tank having a common inlet / outlet. Both are part of a non-treated system (no added chemicals). Condition: Large temperature stratification and water age issues especially in summertime ...

May 5, 2017

By Medora Corporation

Case study - Buoy-based temperature profiling in the Bavarian Lakes

In summertime a temperature stratification occurs in deep lakes – the surface water is warm, but deep down the water is cold. This has considerable influence on the nutrient balance and the biological habitat in these lakes. Due to generally higher air temperatures induced by the climate change, both change and have effects on the life conditions of the ecosystems in the lakes. ...

Jan. 18, 2017

By OTT HydroMet

Impact of barrages on downstream air entrained in water and on upstream river water quality

This research studies the effect of barrages on upstream river water quality and on its self-assimilative. Also, the impact of barrages on upstream water temperature profile is studied. The amount of entrained air in water at river downstream side as a result of barrage existence is also studied. Constructing barrages in river reaches will alter its hydraulics and thus its water quality and ...

Jan. 23, 2015

By Inderscience Publishers