The development of chassis dynamometer of hybrid vehicle based on CAN bus was studied. Chassis dynamometer of hybrid vehicle measurement methods and loading devices are analyzed, and laid the foundation for the resistance simulation of chassis dynamometer. Road resistance simulation on HEV chassis dynamometer is researched, getting electric quantity simulation type of chassis dynamometer drivin...

This paper presents an overview of the factors involved in the selection of an active souring management solution for the Mars field, at which waterflood operations are due to commence in March 2004. It is well documented that the majority of similar seawater injection applications have experienced increased down-hole sulfate-reducing bacteria activity and the reservoir souring and H2S control ...

The results of a series of numerical simulations for the NASA low-speed centrifugal compressor are presented. Large-eddy simulation (LES) is carried out together with the most commonly used Reynoldsaveraged Navier–Stokes (RANS) models, including the mixing length, k– and k– models. Predictions are compared with the available experimental data. It is seen that quantitative predictions of LES are...

The most widely used method for pyrolysing samples for hydrogen or oxygen isotopic analysis involves heating them to greater than 1300 degrees C in a helium stream passed through a glassy carbon tube in an alumina casing. There are a number of difficulties with this. Glassy carbon tubes are expensive and interaction between the carbon tube and the outer casing produces unwanted carbon monoxide ...

Abstract The cement behind casings is an important barrier element in wells that should provide zonal isolation along the well. hardened does not always isolate permeable formations, either due to placement issues or loads over time compromise integrity of barrier. modern method used characterize annular material ultrasonic logging which provides essential information concerning type casing, bu...

During the multistage fracturing of shale gas horizontal wells, casing damage frequently occurs, making it essential to evaluate stress and deformation. This paper establishes a mathematical model thermo-hydro-mechanical coupling finite element casing-cement sheath-formation (CCF). examines effects temperature, thickness, nonuniform in situ stress, mechanical properties cement sheath, treating ...

Temperature affects both the stability of nucleic acid detectors and efficiency DNA amplification. In this study, temperature flow inside a detector were simulated results used to design vents for instrument casing. A test platform was constructed collect experimental data that simulation validation. The showed error less than ±3 K. total two heat-dissipation schemes designed based on new casin...

Summary The recently published opinion that the casing stones of pyramid Khufu had collapsed after big earthquake 1303 AD cannot be maintained.