Twist Blade Distributor in Fluidization Systems: Part 1 – The Computational Procedure

Alias, None Mohammad Azrul Rizal; Nawi, M. A. M.; Sarip, Mohd Sharizan Md; Rahman, Md Tasyrif Abdul; Shabri, None Muhamad Silmie Mohamad; Ibrahim, Raja Muhammad Zulkifli Raja

doi:10.37934/araset.29.2.111

Cited by 1 publication

(1 citation statement)

References 12 publications

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“…Also, the effect of the actuator disk thickness on the results, it was seen that the implementation of small thickness not only requires a finer mesh but also increases the run-time of the simulations [15]. The variation in propeller angle has been studied in terms of twist blade, which explains that the tangential velocity of a propeller with a greater number of blades is the highest [16].…”

Section: Introductionmentioning

confidence: 99%

Characteristics Investigations of Ducted Ka4-70 Series Propeller with Boss Cap Fins Using Numerical and Experimental Method

Berlian Arswendo Adietya,

I Ketut Aria Pria Utama,

Wasis Dwi Aryawan

et al. 2023

CFDL

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Unconventional system that are generally adopted for ship propulsion are Ducted Propellers. These devices have recently been studied with medium-fidelity computational fluid dynamics code (based on the potential flow hypothesis) with promising results. Numerical and experimental comparison of ducted propeller with PBCF, case studies with Propeller Ka4-70 used combination ducted and PBCF Divergent. The study was done numerically using computational fluid dynamics (CFD) approach. The solver is based on the Reynolds-Averaged Navier-Stokes (RANS) solutions and turbulence modelling explicit algebraic stress model (EASM). The test data was obtained from CFD simulations consisting of the open propeller and combination Nozzle plus PBCF, but the experiment was done to Nozzle and PBCF only. All measurements were carried out from J = 0 to J = 1.0 with speeds from 0 m/s to 2.445 m/s. The results of the comparative investigation cases between numerical and experiment analysis from Ka4-70 propellers with Nozzle 19A and PBCF Divergent appears that between CFD and experiments, several phenomena are seen. (i) the Ka4-70 propeller without Nozzle 19A and PBCF divergent experienced large pressure at low-speed J = 0.1 to high-speed J = 0.7, but Ka4-70 propeller with Nozzle and PBCF divergent reach highest pressure at J = 0.1 to J = 0.5; (ii) the Ka4-70 propeller without 19A nozzle and PBCF divergent increases the flow velocity at the boss cap fins but does not increase the axial induce velocity, while Ka4-70 propeller using nozzle and PBCF divergent increases the axial induce velocity of the blade, but does not increase the flow velocity of the boss cap fins; (iii) Ka4-70 propeller without Nozzle and PBCF value increase of propeller η0 to 12% when ESD added in the form of Nozzle and PBCF when J is high, from J = 0.7 to J = 1.0. ; (iv) Ka4-70 propellers with Nozzle 19A and PBCF Divergent has very similar η0 from J=0 to J=1.0. CFD approach are still appropriate to be relied upon for the overall simulation.

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Section: Introductionmentioning

confidence: 99%