Ultrasonic Guided Wave inspection of pipes has been extensively used in various industries such as oil, gas and petrochemical industries. The behavior of guided waves in straight pipes is well known but the presence of features like pipe bends, welds may distort the receiving signals. It is therefore a challenging task to study the behavior of guided waves through these features. However, the 3...

During the processing of nematic soft solids through process flow elements (pipe bends, elbows, etc.), constitutive behavior makes its presence felt via (with rheology driven effects increasing pressure drop) and final product microstructure. This paper explores microstructure configurations liquid crystals in a 90° pipe bends with different types wall anchoring. The governing equations Leslie–...

this paper presents a numerical study of local mass transfer coefficients in a 90° bend using the rng version of k–e model to include the influence of curvature on the turbulent transport. simulations were performed for flow through a 90°, 3-d bend for reynolds numbers of 13500, 90000, and 390000, schmidt numbers of 2.53 and 700 and curvature ratios of 1.5, 2, and 2.5. the differences between t...

Contemporary electronic cooling applications can feature complex heat pipe configurations with multiple sources (MHSs) and one or more bends in various locations to meet physical constraints. It is typically understood that implementing a bend adding MHS was tested for straight single source (SHS) degrade thermal performance. However, the severity of combining two phenomena effects changing loc...

With the development of coal mining, use elbows has diversified forms underground backfill pipelines, which inevitably complicated transportation characteristics filling slurry in pipeline, thus affecting entire backfilling system. The objective this study is to numerically investigate running state cemented paste (CPB) and coarse particles at different velocities by transporting bend pipes. To...

The flow through pipe bends and elbows occurs in a wide range of applications. While many experimental data are available for such flows the literature, their numerical simulation is less abundant. Here, we present highly-resolved simulations laminar turbulent water 90° bend using Smoothed Particle Hydrodynamics (SPH) methods coupled to Large-Eddy Simulation (LES) model turbulence. Direct compa...