In two-phase liquid-gas flow, the distribution of the respective liquid and gas phases in the pipeline is an important aspect of their description. Their description descriptions exhibit some commonly observed flow structures known as two-phase flow patterns or flow regime.…
Tee junctions are found in most piping systems in many engineering applications. As such, engineers need to determine the pressure losses across these junctions. Steady-state pressure loss coefficients can be calculated using experimental and analytical expressions. However, the calculation of…
The design of two-phase liquid-gas pipe flow systems is a complex process. It can be common practice for engineers to use template design calculation sheets for two-phase systems. These calculation sheets often utilize rules-of-thumb as part of the template for…
Mining of valuable minerals or metals usually involves the removal of vast quantities of earth from the ground in order to obtain a relatively small amount of the desired material. The material left over after the refining process is referred…
The characteristics of slurry viscosity are defined by its rheology which describes the deformation and flow behaviour of materials, both fluids and solids. It applies to fluids which exhibit complex microstructures such as sludge and suspensions, mud, fluid-foods etc. These…
Piping System Design; Much has been written about common problems with poorly designed pumped piping systems. Whilst there is no “one size fits all” or “rule of thumb” solution for all systems types, i.e. liquid, gas, slurry, two-phase etc, the…
We are all fairly familiar with the performance curves for centrifugal pumps but what may not be so obvious is the extremely important relationship between the actual duty-point on the pump curve and the resultant pump reliability. Overlooking this relationship…
General Release summary: This release provides speed improvements at start up and across a network. There are over 250 new components, centrifugal and positive displacement pumps, controllers, fluids and pipes added to the databases. This release also contains bug fixes.…
To obtain maximum accuracy in gas calculations, particularly in systems where large pressure losses occur, the Joule-Thomson effect needs to be included in the solution. The J-T effect describes the increase or decrease in temperature of a real gas (as…
District Cooling Systems – Many countries experience hot summers which impose a need for air conditioning in order to achieve and maintain a comfortable indoor environment. Air conditioning has traditionally been provided to buildings by electrically powered air conditioning units…
Fire sprinkler systems can be found in a wide range of buildings or structures from warehouses to multi-story buildings, ships, oil rigs etc. Sprinkler systems are used to provide a reliable method of automatically detecting and extinguishing fires at an…
This example case considers the flow of water in a 6 inch Schedule 40 pipeline and compares the results when using the Moody Friction Factor vs the Hazen Williams formula for the same flowing conditions. A hand calculation will initially…
Back in November 2014, Nevesbu and Iv-Oil & Gas joined forces and started the Pre-Contract Engineering for the contract to modify and upgrade the Petrojarl 1 FPSO. It was anticipated that the upgrade will take around a year to complete.…
General Release summary: The thermodynamic capabilities have been extended for single phase fluids. FluidFlow can now accurately cover all phase regions and enthalpy paths through and from supercritical phase region. Calculations within supercritical region are now valid. This release also…
Bugs: Fixed a bug that occured when selecting “mm Water g” OR “m Water g” units.This was originally fixed in V3.39 but regressed in V3.41. New procedures in place to eliminate code regressions.
General Release info: Improved pipe heat loss calculation with the addition of new correlation for estimating outside film heat transfer coefficient. Bug fixes. Changes * Crane Tee Junction TP410 pre 2009 relationships. New recommendation is to use for existing/legacy calculations…
FluidFlow v3.36 (15th March 2016) A maintenance release fixing bugs reported by users during the period November 2015 to February 2016