海角黑料

Faculty of Engineering
 

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Bagus Muljadi

Assistant Professor, Faculty of Engineering

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Biography

Bagus is an Assistant Professor of Chemical and Environmental Engineering at the 海角黑料 with a joint affiliation with Virginia Tech, United States. Prior to joining Nottingham university, he was a postdoctoral research associate at Earth Science and Engineering, Imperial College London; and at Institut de Math茅matiques de Toulouse, France. He received an MSc and a PhD in Applied Mechanics from National Taiwan University. He received his first degree in Mechanical Engineering from Institut Teknologi Bandung, Indonesia.

He is a member of the , and the Environmental Fluid Mechanics and Geoprocesses Research Group.

Bagus is the steering committee coordinator of the UK-Indonesia Consortium for Interdisciplinary Sciences (UKICIS) - a consortium of research intensive universities where Nottingham is a founding member of. The UKICIS features in as a vehicle for research and innovation collaboration between the two countries.

Bagus is the recipient of Vice-Chancellor's Medal 2021 in recognition of his outstanding contribution to the university.

Expertise Summary

Bagus' research is characterized by its interdisciplinarity. He develops mathematical and numerical models, and combines imaging techniques using X-ray CT and Magnetic Resonance Imaging to solve flow and reactive transport problems in complex geometries across a wide range of flow regimes. His methods have been applied for solving problems in the fields of hydro-geology, bio-architecture, peatlands management, groundwater transport, and carbon capture and storage.

Teaching Summary

Bagus is the convenor of Year 1 Fluid Mechanics CHEE1034 module, and Year 4 Advanced Computational Method CHEE4004. He also supports Year 1 Practical Laboratories, Year 4 MEng Projects (H84MEP), and… read more

Research Summary

Bagus' research combines a range of state-of-the-art modelling and experimental techniques to understand flow and transport in natural porous media. His research aims at overcoming the scientific… read more

Selected Publications

  • BAGUS P. MULJADI, MARTIN J. BLUNT, ALI Q. RAEINI and BRANKO BIJELJIC, 2016. Advances in Water Resources. 95, 329 - 340
  • B. P. MULJADI, J. NARSKI, A. LOZINSKI and P. DEGOND, 2015. Multiscale Modeling & Simulation. 13(4), 1146-1172
  • MULJADI, BAGUS PUTRA, 2017. Transport in Porous Media. 116(1), 1-18
  • BAGUS P. MULJADI, BRANKO BIJELJIC, MARTIN J. BLUNT, ADAM COLBOURNE, ANDY J. SEDERMAN, MICK D. MANTLE and LYNN F. GLADDEN, 2017. Journal of Contaminant Hydrology. -

The following project is available to PhD student candidates with strong numerical mathematics, and/or related engineering background. For Indonesian students, different funding routes including LPDP are available. Contact me at Bagus.Muljadi@nottingham.ac.uk with your resume if interested.

Project rationale and aims

Aim:

This project will determine, via field measurement and laboratory investigation, the relationship between peatland surface motion, water table depth and greenhouse gas emissions. By doing this the student will be able to calibrate satellite measures of surface motion to greenhouse gas emissions and thereby provide the physical foundations of a new approach to quantifying global carbon emissions from peatland.

Why peat matters:

Peatlands hold 1/3 of soil carbon in 3% of the global land area. The UK has 2 Mha of peatlands (10% land area). 80% of these peatlands are damaged to some degree and estimated to emit 10-20 Mt C a-1. Restoring degraded peatlands is an essential part of a global strategy to fight climate change.

Scientific Rationale:

Satellite measures of surface motion provide an exciting new and cost-effective means of quantifying the state global peatlands. Surface motion is overwhelmingly determined by the mechanical response to change in the mass of water within a peat body. In turn, this is regulated by the hydrology, pore structure and ecology of the peatland. Consequently, the surface motion is a sensitive indicator of peatland condition. Physical understanding of the relationship between surface motion, ecology and hydrology is poor as field measures are difficult and time consuming.

To address this peat samples will be collected from Indonesia and the UK. Laboratory measurement will be used to characterize the pore structure using porosimetry and X-ray CT scanning. Numerical modelling of fluid flow will be used to understand the vertical and lateral motion of water and gas through the characterized pore structure and this data will be used to explain field observation of surface motion in relation to changes in water storage and gas emissions. This will enable in-depth analysis of the surface motion relative to peatland properties and hence calibration of satellite measures of surface motion to greenhouse gas emissions.

Supervisory Team at Nottingham

Prof David Large monitoring of peatland surface motion.

Dr Bagus Muljadi expert in fluid mechanics and numerical modelling

Prof Sean Rigby expert in the structure of porous materials and experimental porosimetry.

Prof Sofie Sjogersten - peatland science with particular expertise in tropical peat

Dr Matteo Icardi - applied maths, numerical modelling and theoretical mechanics

If successful we would then bring in support from CEH Bangor.

Dr Jenny Williamson

Prof Chris Evans

References:

  • ADILAN W. MAHDIYASA, MELLY MELLY, UDJIANNA S. PASARIBU, MUH TAUFIK and BAGUS P. MULJADI, 2025. Ecological Informatics. 92, 103532

  • MAHDIYASA, A. W., LARGE, D. J., ICARDI, M. and MULJADI, B. P., 2024. Earth Surface Dynamics. 12(4), 929-952

  • ADILAN W. MAHDIYASA, DAVID J. LARGE, BAGUS P. MULJADI and MATTEO ICARDI, 2023. Ecological Modelling. 478, 110299

  • FAZELI, HOSSEIN, VANDEGINSTE, VEERLE, RABBANI, ARASH, BABAEI, MASOUD and MULJADI, BAGUS, 2021. Energy & Fuels. 35(13), 10461-10474

  • MAHDIYASA, A. W., LARGE, D. J., MULJADI, B. P., ICARDI, M. and TRIANTAFYLLOU, S., 2021. Ecohydrology.

Bagus is the convenor of Year 1 Fluid Mechanics CHEE1034 module, and Year 4 Advanced Computational Method CHEE4004. He also supports Year 1 Practical Laboratories, Year 4 MEng Projects (H84MEP), and Year 4 MSc Projects (H84MPR)

Current Research

Bagus' research combines a range of state-of-the-art modelling and experimental techniques to understand flow and transport in natural porous media. His research aims at overcoming the scientific challenges due to complex geometry and bio-geo-chemical processes; and a large disparity in scales in many subsurface flow and transport problems. He incorporates X-ray micro-CT, and Nuclear Magnetic Resonance imaging technologies to probe into flow and transport at a micro-, and milimetres scale. These provide the basis for validation and direct inputs for the numerical models. Bagus has developed mathematical and numerical models for flow at a rarefied (where the characteristic length of the problem is comparable to the gas mean-free path), and a continuum regime. He developed bespoke multiscale methods for flow and transport in genuinely heterogeneous media where sub-scale information is communicated to the larger scales by means of multiscale basis functions. He also developed a multiscale method based on continuous-time random walk for problems involving mineral dissolution (reactive transport).

  • KARIBI-BOTOYE, NENGI FIONA, GUY THERAULAZ, BAGUS MULJADI, VASILY DEMYANOV and KAMALJIT SINGH, 2025. Journal of the Royal Society Interface. 22(231',),
  • ADILAN W. MAHDIYASA, MELLY MELLY, UDJIANNA S. PASARIBU, MUH TAUFIK and BAGUS P. MULJADI, 2025. Ecological Informatics. 92, 103532
  • BELSHAW, GRACE E., STEER, ELISABETH, JI, YUKUN, AZIS, HERWIN, SAPIIE, BENYAMIN, MULJADI, BAGUS and VANDEGINSTE, VEERLE, 2024. Deep Underground Science and Engineering. n/a(n/a),
  • MAHDIYASA, A. W., LARGE, D. J., ICARDI, M. and MULJADI, B. P., 2024. Earth Surface Dynamics. 12(4), 929-952
  • ADILAN W. MAHDIYASA, DAVID J. LARGE, BAGUS P. MULJADI and MATTEO ICARDI, 2023. Ecological Modelling. 478, 110299
  • FAZELI, HOSSEIN, VANDEGINSTE, VEERLE, RABBANI, ARASH, BABAEI, MASOUD and MULJADI, BAGUS, 2021. Energy & Fuels. 35(13), 10461-10474
  • MAHDIYASA, A. W., LARGE, D. J., MULJADI, B. P., ICARDI, M. and TRIANTAFYLLOU, S., 2021. Ecohydrology.
  • SINGH, KAMALJIT, MULJADI, BAGUS P., RAEINI, ALI Q., JOST, CHRISTIAN, VANDEGINSTE, VEERLE, BLUNT, MARTIN J., THERAULAZ, GUY and DEGOND, PIERRE, 2019. Science Advances. 5(3),
  • MULJADI, BAGUS PUTRA, 2017. Transport in Porous Media. 116(1), 1-18
  • BAGUS P. MULJADI, BRANKO BIJELJIC, MARTIN J. BLUNT, ADAM COLBOURNE, ANDY J. SEDERMAN, MICK D. MANTLE and LYNN F. GLADDEN, 2017. Journal of Contaminant Hydrology. -
  • BAGUS P. MULJADI, MARTIN J. BLUNT, ALI Q. RAEINI and BRANKO BIJELJIC, 2016. Advances in Water Resources. 95, 329 - 340
  • B. P. MULJADI, J. NARSKI, A. LOZINSKI and P. DEGOND, 2015. Multiscale Modeling & Simulation. 13(4), 1146-1172
  • DEGOND, PIERRE, LOZINSKI, ALEXEI, MULJADI, BAGUS PUTRA and NARSKI, JACEK, 2015. Communications in Computational Physics. 17(4), 887鈥�907
  • JAW-YEN YANG, BAGUS PUTRA MULJADI, ZHI-HUI LI and HAN-XIN ZHANG, 2013. Communication in Computational Physics. 1
  • JAW-YEN YANG, BAGUS PUTRA MULJADI, SU-YUAN CHEN and ZHI-HUI LI, 2013. Computers & Fluids. 85, 153 - 165
  • BAGUS PUTRA MULJADI and JAW-YEN YANG, 2012. Computers & Fluids. 63, 184 - 188
  • MULJADI, BAGUS PUTRA and YANG, JAW-YEN, 2012. Proceedings of the Royal Society of London A: Mathematical, Physical and Engineering Sciences. 468(2139), 651-670
  • JAW-YEN YANG and BAGUS PUTRA MULJADI, 2011. Journal of Statistical Physics. 145(6), 1674-1688

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