Multiple vapor cavitation bubble interactions with a thermal lattice Boltzmann method

He, Xiaolong; Peng, Haonan; Zhang, Jianmin; Yuan, Hao

doi:10.1016/j.oceaneng.2022.113058

Cited by 19 publications

(2 citation statements)

References 48 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…Kavitasi adalah peristiwa di mana gelembung-gelembung uap terbentuk dalam fluida yang mengalir, menyebabkan penurunan tekanan di bawah tekanan uap jenuh pompa pada suhu operasinya. Gelembung-gelembung uap dalam fenomena ini memiliki siklus waktu yang sangat singkat [3]- [5]. Aliran fluida membawa gelembung-gelembung tersebut ke daerah dengan tekanan yang lebih tinggi dari tekanan uap jenuh fluida.…”

Section: Pendahuluanunclassified

Analisis Pengaruh Tinggi Hisap Pompa Sentrifugal Terhadap Kapasitas Dan Efisiensi Pompa

Rasyid,

Ritonga,

Aldori

et al. 2023

JMEMME

View full text Add to dashboard Cite

Pompa adalah peralatan mekanis untuk meningkatkan energi tenakan pada cairan(fluida) yang dipompa dengan mengubah energi mekanis poros penggerak menjadi energi potensial dan energi kinetis fluida. Seiring berkembangnya teknologi, pompa digunakan diberbagai bidang termasuk pemakaiannya dalam bidang indsutri. Pompa Sentrifugal merupakan salah satu jenis pompa yang mempunyai lingkup penggunaan yang sangat luas terkait dengan head dan kapasitas yang dihasilkan. Pada kesempatan ini penulis mencoba memaparkan hasil penelitian tentang unjuk kerja pompa sentrifugal bila dilakukan variasi tinggi hisap pada pompa sentrifugal akan mempengaruhi kapasitas, Head, Daya Hidraulis dan effesiensi pompa sentrifugal. Variasi tinggi hisap dimaksudkan untuk mengetahui peningkatan performance pompa yang terjadi akibat penambahan tinggi hisap pompa. Menambah tinggi hisap pompa sangat berpengaruh terhadap kapasitas aliran air yang dihasilkan, hal ini juga akan mempengaruhi kerja pompa, kecepatan spesifik, daya dan efesiensi pompa. Sehingga dapat diperoleh titik kerja tertinggi pompa sentrifugal dengan Kapasitas (Q) 0,001180 m3/s, Head (H) 6,066 m, Daya Hidraulis (Ph) 70,008 watt, Effesiensi (É³p) 26,51 %, hal ini dapat terlaksana bila diikuti penambahan daya dari motor penggeraknya.

show abstract

Section: Pendahuluanunclassified

Analisis Pengaruh Tinggi Hisap Pompa Sentrifugal Terhadap Kapasitas Dan Efisiensi Pompa

Rasyid,

Ritonga,

Aldori

et al. 2023

JMEMME

View full text Add to dashboard Cite

show abstract

“…Numerous studies have been carried out to simulate the growth or collapse processes of cavitation bubbles with pseudo-potential LBM [25,40,41,39,37,38,51,52,1,20,21,50,19,22], but most of these studies have simulated only the growth or collapse processes. In all the LBM-based cavitation bubble inception or growth studies, a vapor nucleus is initialized, and the bubble is formed by nucleus growth under the pressure difference between the bubble and the surrounding liquid [39,37,48,12].…”

mentioning

confidence: 99%

A lattice Boltzmann study of the thermodynamics of an interaction between two cavitation bubbles

He,

Song,

Peng

et al. 2024

DCDS-S

Self Cite

View full text Add to dashboard Cite

A two-dimensional double-distribution-function thermal pseudopotential lattice Boltzmann model is applied to study the inception and evolution processes of cavitation bubbles. The inception process is realized by a high-temperature spot, while the growth and collapse processes are realized through the variation of the boundary pressure. Interactions between two equal-sized bubbles and two unequal-sized bubbles are systematically investigated. A modified Rayleigh-Plesset equation for the two cavitation bubbles that includes a weak interaction and thermal effects is proposed. For the weak interaction mode, the highest collapse temperature is lower than the initial input temperature due to energy dissipation. However, for the strong interaction mode, the maximum temperature is ultimately higher than the initial input temperature due to the superposition of an exothermic process. For the weak interaction mode between two unequal-sized bubbles, when the distance between the two bubbles is small, the re-entrant jets and pressure wave generated by the small bubble cause the inner wall of the large bubble to flatten. For the strong interaction film-thinning mode, the microjets and high pressure generated by the small bubble change the collapse direction of the large bubble.

show abstract

Contact-point analysis of attached-wall cavitation evolution on chemically patterned surfaces using the lattice Boltzmann method

He,

Peng

2024

Chemical Engineering Science

View full text Add to dashboard Cite

Multiple vapor cavitation bubble interactions with a thermal lattice Boltzmann method

Cited by 19 publications

References 48 publications

Analisis Pengaruh Tinggi Hisap Pompa Sentrifugal Terhadap Kapasitas Dan Efisiensi Pompa

Analisis Pengaruh Tinggi Hisap Pompa Sentrifugal Terhadap Kapasitas Dan Efisiensi Pompa

A lattice Boltzmann study of the thermodynamics of an interaction between two cavitation bubbles

Contact-point analysis of attached-wall cavitation evolution on chemically patterned surfaces using the lattice Boltzmann method

Contact Info

Product

Resources

About