Stringent emission regulations around the world necessitate use of high-efficiency catalytic converters in vehicle exhaust systems.Therefore, determining optimum geometry honeycomb monolith structure is necessary.This requires a high surface area for treating gases while maintaining low pressure drop engine.In present paper, an adapted sub-grid scale modeling used to predict loss square-and hexagonal-cell-shaped monoliths.This represents actual variations between inlet and outlet various...

Geldart Type-D particles are often associated with poor fluidization characteristics due to their large sizes and higher densities. This paper reports the hydrodynamics of various when fluidized in a swirling bed (SFB). Four different ranging from 3.85 mm 9.84 respective densities 840 kg/m3 1200 were used as material study effect weights (500 gram 2000 gram) centre bodies (cone cylinder) for superficial velocities up 6 m/s. The performance SFB was assessed terms pressure drop values, minimum...

Femoropopiteal artery stenting is a common procedure suggested by medical expert especially for patient who diagnosed with severe stenosis. Many researchers reported that the growth of stenosis significantly related to geometry stent strut configuration. The different shapes are presenting flow pattern and re-circulation in stented femoropopliteal artery. blood characteristics near predicted possibility thrombosis atherosclerosis be formed as well increase Thus, this study aims determine...

It is often necessary in fluid flow systems to simultaneously decelerate and turn the flow. This can be achieved by employing turning diffusers systems. The through a diffuser complex, apparently due expansion inflexion introduced along direction of In present work, characteristics 2-D means varying inflow Reynolds number are investigated. within outlet cross-section longitudinal section were examined respectively 3-D stereoscopic PIV PIV. uniformity affected with increase dispersion core...

The present work aims to numerically investigate the effect of varying turning angle, o = 30° - 180° on performance 3D diffuser and develop correlations via integrating angle using Asymptotic Computational Fluid Dynamics (ACFD) technique. Among all turbulence models examined, best validated results were obtained with Reynold Stress Model enhanced wall treatment =1.0 was applied for intensive simulation. As increased from 30˚ 180˚, pressure recovery reduced by 89.3% flow uniformity index...

The present work aims to numerically investigate the effect of varying turning angle, ϕ = 30° - 90° on performance 2-D diffuser and develop correlations via integrating angle using Asymptotic Computational Fluid Dynamics (ACFD) technique. Standard k-ε adopting enhanced wall treatment y+ ≈ 1.1 appeared as best validated model represent actual cases with deviation ±4.7%. Results show that pressure recovery, Cp flow uniformity, σout are distorted respectively 37% 28% increment from 90°....

The geometry of a curved diffuser often inviting the flow to separate.The separation phenomenon plays vital role in recovery pressure inside diffuser.Besides, geometrical and operating aspects have always been taken into consideration most relatable researches.Pressure uniformity steady, developed entering turbulent circularsectioned 180° has investigated numerically by varying parameters.The with area ratio (2, 3 4), radius inlet curvature respectively 50 mm 180 was considered.Different...

Recently, a remarkable scientific interest in the inhalation therapy for respiratory disease was spiked attributed to growing prevalence of asthma, chronic obstructive pulmonary (COPD), and coronavirus 2019 (COVID-19) pandemic. A pressurized metered-dose inhaler (pMDI) is best option by providing fast efficient symptomatic relief within lung. However, rapid development new devices could be critical this competitive environment, optimizing costly time-consuming. Therefore, computational fluid...

In Malaysia, government initiatives and policymakers play significant role in creating effective strategies aiming at enhancing the usage of residential, industrial commercial solar PV systems. However, most barrier to widespread adoption photovoltaic (PV) systems is their high installation costs; as a result, numerous studies on system modification are now being conducted. Several simulation tools available for efficient extensive integration energy. To predict energy output using climate...

Present study involves experimental and numerical work to investigate the effect of integral wake splitter towards overall performance cross-flow, circular tube, heat exchanger system. The was conducted obtain local distribution pressure coefficient around plain tube bank staggered arrangement which subjected a cross-flow air with Reynolds number 15950. consisted 2-dimensional unsteady simulation validated against data. approach utilized simulate similar but length-to-diameter ratio 0.5, 1,...

Meniere's disease is a rare disorder that affects the inner ear which might be more severe if not treated. This due to fluctuating pressure of fluid in endolymphatic sac and dysfunction cochlea causing stretching vestibular membrane. However, pattern flow recirculation region still fully understood. Thus, this study aims investigate correlation between increasing volume characteristics such as velocity, wall shear stress. Three dimensional model simplified modeled using computer aided design...

This paper reports the effects of a longitudinal plate attached at backward stagnation point bank tubes on local static pressure distribution. The is termed as an integral wake splitter. Investigations hydrodynamic characteristics tube banks with splitter were carried out in cross flow air rectangular duct Reynolds number 15950. length-to-tube-diameter ratios studied 0.5, 1.0, 1.5 and 2.0. consisting 12 rows 3 per row equilateral triangular arrangement transverse pitch to diameter ratio, =...

Although water sprinkler is used extensively in agriculture, little effort had been made to improve its performance, resulting many head available at market having less optimum design. Thus, this study aims the basic design of by conducting a parametric on effect model geometry due different flow characteristics. A common type modelled with computer aided software and various changes such as enlarging nozzle diameter from 4mm 8mm, changing vane angle 70 degrees 45 are original model. The...

Air filtration system and filter play an important role in getting a good quality air into turbo machinery such as gas turbine. The has improved the of protect turbine part from contaminants which could bring damage. During separation air, pressure drop cannot be avoided but it can minimized thus helps to reduce intake losses engine [1]. This study is focused on configuration order obtain minimal along filter. used basic geometry provided by Salutary Avenue Manufacturing Sdn Bhd. two...