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Journal : Indonesian Journal of Science and Technology

The Effects of Surfactant on the Evolution of a Thin Film under a Moving Liquid Drop Kartika Yulianti; Agus Yodi Gunawan; Edy Soewono
Indonesian Journal of Science and Technology Vol 5, No 1 (2020): IJOST: April 2020
Publisher : Universitas Pendidikan Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.17509/ijost.v5i1.23100

Abstract

The effect of surfactant on the thickness of a thin film bounded by a solid surface and a moving liquid drop was investigated. We proposed a model so that parameters from the liquid drop can be stated in a parameter that acts as normal pressure to the thin film. Using the lubrication approximation, the model was reduced to a set of nonlinear partial differential equations in terms of the film thickness and surfactant concentration. Since we were interested in the role of the surfactant in lifting up the drop, we assumed that the density of the drop is higher than the density of the thin film. Numerically, the results show that the presence of the surfactant tends to delay the decrease of the film thickness insignificantly. However, when the surfactant was added into the system, it tends to significantly increase the film thickness for a certain range value of the normal pressure.
Co-Authors Aan Hasanah Abdul Latip Abdul Latip Abolla, Gloria Angelica Agus Y. Gunawan Agus Yodi Gunawan Aini, Siti Aisy, Khansa Salsabila Rohadatul Al Jupri Alfitri, Putri Armania Agustina Alivia Alivia Alvira Firjan Humaira Asyifa Rahmawati Azzahra, Yasmine Bill Chairy Rizki Bustaren Cece Kustiawan Dadang Juandi Darhim Darhim Dian Usdiyana Edy Soewono Eha Harningsih Elisabet Ivanna Grace Handayani Encum Sumiaty, Encum Enmufida Enmufida Entit puspita Erman Suherman Eyus Sudihartinih Fakhrana Nadhilah Fanny Febryani Fatimatuz Zahro Octavia Fauzan Syahbudin Fery Ferdiansyah Fitri Rahmawati Fitri Rokhmatillah Fitri, Azela Hamdan Anshory Martanegara Husty Serviana Husain Idris Iskandar Ika Zulhidayati Isnie Yusnitha, Isnie Jarnawi Afgani Dahlan Khusnul Novianingsih Kurniati, Nurdiyah Kurniawan, Surya Kusnandi Kusnandi Kusnandi, Kusnandi Lafita Rahmi LUKMAN, LUKMAN M Akbar Gulvara M. Rizqi Ramadhan Mutiara Pertiwi N. Nurjanah Nanang Priatna Nasution, Muhammad Awaludin Nida Fitria Noor Annisah Sholehah Nur Aidah, Anisa Nur Elisya Nur Hidayatullah Romadhon Nur Rofi'ah Nurmala Setianing Putri Pangestu, Herny Wulandari Pangestu, Herny Wulandari Rini Marwati Ririn Sispiyati Rokhmatillah, Fitri Sadiyyah, Fitriani Halimatus Salman, Gelar Saragih, Martin Valerian Amadeus Siti Aisah, Lusi Siti Fatimah Siti Fatimah Suci Permata Hati Sufyani Prabawanto, Sufyani Sulaiman, Faris Hasby Surya Kurniawan Syahraini, Alfi Syarifuddin Syarifuddin Taqiya, Farah Ayyun Tia Purniati Tia Purniati Turmudi Ulfa, Nadia Ulfah Nur Azizah Utari Wijayanti Wijaya, Muhammad Lutfi Wijaya, Muhammad Lutfi Lutfi Wildy Ardan Yaya S. Kusumah Yaya S. Kusumah Yaya Sukjaya Kusumah Yusuf Adhitya