Optimum Design of Nozzle Geometry of Dry Ice Blasting Using CFD for the Reduction of Noise Emission

Mat, Mohamad Nur Hidayat; Asmuin, Norzelawati

doi:10.30880/ijie.2018.10.05.019

Cited by 12 publications

(8 citation statements)

References 11 publications

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“…In the ANSYS, there are four operation mesh mode can be done. The process was beginning with specifying the global mesh setting, inserting a local mesh setting, generating the mesh and checking mesh quality [22][23]. By using proximity and curvature, the curve object (cylinder) and square object (box) can be pick as the convergent segment.…”

Section: Meshing Of Actuator Nozzle Inside the Pmdi Devicementioning

confidence: 99%

See 1 more Smart Citation

Influence of Actuator Nozzle Angle on the Flow Characteristics in Pressurized-Metered Dose Inhaler Using CFD

Rahman¹,

Asmuin²,

Taib³

et al. 2020

CFDL

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Pressurized metered dose inhalers (pMDIs) are often used for the treatment of asthma and chronic obstructive pulmonary disease. This device is easy to carry, highly effective and extremely safe, allowing reliable, consistent dosage delivery, metered dose inhalers are the inhalation devices that doctors and patients can readily select from around the world. This pMDI inhaler system has a problem which is the particle does not penetrate into the alveolar. ANSYS Fluent Version 19.2 was used to find the best angle of the actuator nozzle by parametric analysis. Standard K-epsilon was used as the turbulence model with enhanced wall treatment function. Discrete phase model (DPM) was applied to represent the particle flow. The result shows the best actuator nozzle angle is 120-degree which affects the maximum magnitude of particle velocity.

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Section: Meshing Of Actuator Nozzle Inside the Pmdi Devicementioning

confidence: 99%

“…Kleinstreuer et al, [10] is one of the leading researchers researching HFA-pMDI and CFC-pMDI numerically in the oral airway model. In his research, 2000 particles were used in the oral airway model, 150 m / s for initial velocity, the cone angle is 35 o , and Dunbar et al, [22] obtained the size distribution. The result was enormous, i.e.…”

Section: Introductionmentioning

confidence: 99%

Influence of Actuator Nozzle Angle on the Flow Characteristics in Pressurized-Metered Dose Inhaler Using CFD

Rahman¹,

Asmuin²,

Taib³

et al. 2020

CFDL

Self Cite

View full text Add to dashboard Cite

show abstract

“…In the ANSYS, there was four operation mesh mode can be done. The process was beginning with specifying the global mesh setting, inserting a local mesh setting, generating the mesh and checking mesh quality [23,24]. By using proximity and curvature, the curve object (cylinder) and square object (box) can be pick as the convergent segment.…”

Section: Meshing For New Design (Aerocup) and Commercial Design A Model Of MDI Disposable Inhaler Spacermentioning

confidence: 99%

Investigate Flow Characteristics of Metered-Dose Inhaler (MDI) Disposable Inhaler Spacer (AeroCup) for COVID-19 Patient by using Computational Fluid Dynamic (CFD)

Rahman

Asmuin

Taib

et al. 2020

CFDL

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Coronavirus disease 2019 (COVID-19) caused by severe acute respiratory coronavirus-2 syndrome (SARS-CoV-2) were first reported by officials in Wuhan City, China, in December 2019. COVID-19 patients have a symptom of respiratory pneumonia diseases which have difficulties in breathing normally. Previously, the nebulizer machine commonly used to treat respiratory pneumonia diseases. However, the usage for this machine was not suggested during this COVID-19 period because the virus will be spread off easily. To overcome these shortcomings, the uses of Metered-Dose Inhaler (MDI) with MDI disposable inhaler spacer is preferable. Besides, it had been known that the used of MDI disposable inhaler spacer helps to increase the uptaking of the drug into the lung. Besides that, the high demand for the MDI Disposable Inhaler Spacer in the hospital, causing a shortage of supply in Malaysia. Thus, this study aims to produce a new design of this spacer to full fill the market need. This new design of MDI Disposable Inhaler Spacer (AeroCup) was designed by using Solid Work 2018. Then, the parameters for flow characteristic such as particle velocity magnitude, velocity, Eddy viscosity, turbulence Eddy dissipation and turbulence kinetic energy (TKE) was successfully characterized and compared with commercial design A using ANSYS Fluent Version 19.2. The result showed that new design (AeroCup) had the desired characteristic, which was almost similar to commercial design A. This study can provide a piece of information to produce the low-cost metered-dose inhaler (MDI) disposable inhaler spacer to enlighten the burden shouldered by front liners, especially during the pandemic and also can scale-up the economic viability.

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“…The dry ice blasting is identified by its moistureless operating conditions [1] and a substantially lesser amount of waste, which are the significant advantages of the system after the cleaning process takes place. Not only that, but its operational parameters are also less complicated to be controlled as it can be done only by adjusting the mass flow and pressure change [2]. Furthermore, the system can be regarded as a relatively cheap and safe method to be widely utilized [3].…”

Section: Introductionmentioning

confidence: 99%

Optimizing nozzle convergent angle using central composite design on the particle velocity and acoustic power level for single-hose dry ice blasting nozzle

Mat

Asmuin

Basir

et al. 2020

J Therm Anal Calorim

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One of the important parameters in developing dry ice blasting nozzle is the high-speed dry ice pellets. However, many studies focus primarily only on its performance without considering the noise emission that comes from an operating nozzle. In this method, the central composite optimization tool has been used. The two-way mass momentum and energy exchange are successfully modeled using the two-way mass momentum model. As an attempt to theoretically verify the model accuracy, a comparison is conducted on the density, pressure, temperature, as well as Mach number ratios corresponding to various ratios of nozzle area. In return, the smallest value of the convergent angle results in the highest velocity of 516.75 m s −1 , as well as the highest level of the acoustic power level of 144.36 dB. Besides, one of the vital influencing factors on the emitted acoustic power level is the turbulence intensity, which can achieve a maximum of 1% intensity for an angle of 20° at the throat section. Besides, the same negative sensitivity of around − 0.99% is provided by the velocity and acoustic power level, which is highly responsive toward the convergent angle variation. Furthermore, the optimum nozzle convergent angle for the minimization of the acoustic power level and maximization of the velocity is 7.03°. The novelty of this research lies in the findings on the effective convergent angle of the dry ice blasting nozzle that accelerates the particle flow and minimizes the noise emission from the operating nozzle.

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Optimum Design of Nozzle Geometry of Dry Ice Blasting Using CFD for the Reduction of Noise Emission

Cited by 12 publications

References 11 publications

Influence of Actuator Nozzle Angle on the Flow Characteristics in Pressurized-Metered Dose Inhaler Using CFD

Influence of Actuator Nozzle Angle on the Flow Characteristics in Pressurized-Metered Dose Inhaler Using CFD

Investigate Flow Characteristics of Metered-Dose Inhaler (MDI) Disposable Inhaler Spacer (AeroCup) for COVID-19 Patient by using Computational Fluid Dynamic (CFD)

Optimizing nozzle convergent angle using central composite design on the particle velocity and acoustic power level for single-hose dry ice blasting nozzle

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