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Impact of tsunamis on buildings in array layouts as macro roughness: lessons from the 2018 Anak Krakatau event through DualSPHysics modeling.

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Title: Impact of tsunamis on buildings in array layouts as macro roughness: lessons from the 2018 Anak Krakatau event through DualSPHysics modeling.
Authors: Triatmadja, Radianta1 (AUTHOR), Benazir1 (AUTHOR) benazir@ugm.ac.id, Tahalele, Marcio2 (AUTHOR), Kuswandi3 (AUTHOR), Pratomo, Afaf Nadiyah Rifa1 (AUTHOR)
Source: Natural Hazards. May2025, Vol. 121 Issue 8, p9679-9704. 26p.
Subject Terms: *Fluid dynamics, *Building layout, *Sustainable communities, *Tsunamis, *Complex fluids, *Tsunami damage
Abstract: Coastal regions, facing rapid urbanization and increasing population density, are highly vulnerable to tsunamis, which can cause severe damage to infrastructure along shorelines. Despite the known risks, rebuilding efforts often occur in the same vulnerable areas without significant relocation. This study uses the DualSPHysics model, known for its precision in simulating complex fluid dynamics, to analyze the interaction between tsunamis and building models, specifically focusing on scenarios inspired by the 2018 Anak Krakatau Volcano tsunami. Six different layout scenarios of buildings, treated as macro-roughness elements (MRMs), were tested to explore their impact on tsunami forces. Model verification was conducted using laboratory data on tsunami forces acting on single and array models to ensure accuracy. The study identifies two primary mechanisms through which MRMs affect tsunami forces on a primary structure: shielding, which reduces direct wave impact and structural damage, and shadowing, which modifies wave reflection and flow patterns, thereby decreasing the overall force on the structure. These insights highlight the critical role of MRM placement in mitigating tsunami-induced forces, offering valuable guidance for enhancing coastal infrastructure resilience. The findings contribute to developing effective tsunami risk mitigation strategies, informing building design, and improving post-disaster recovery planning, ultimately promoting safer and more sustainable coastal communities. [ABSTRACT FROM AUTHOR]
Database: Energy & Power Source
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An: 185810739
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Items – Name: Title
  Label: Title
  Group: Ti
  Data: Impact of tsunamis on buildings in array layouts as macro roughness: lessons from the 2018 Anak Krakatau event through DualSPHysics modeling.
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  Data: <searchLink fieldCode="AR" term="%22Triatmadja%2C+Radianta%22">Triatmadja, Radianta</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Benazir%22">Benazir</searchLink><relatesTo>1</relatesTo> (AUTHOR)<i> benazir@ugm.ac.id</i><br /><searchLink fieldCode="AR" term="%22Tahalele%2C+Marcio%22">Tahalele, Marcio</searchLink><relatesTo>2</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Kuswandi%22">Kuswandi</searchLink><relatesTo>3</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Pratomo%2C+Afaf+Nadiyah+Rifa%22">Pratomo, Afaf Nadiyah Rifa</searchLink><relatesTo>1</relatesTo> (AUTHOR)
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  Data: <searchLink fieldCode="JN" term="%22Natural+Hazards%22">Natural Hazards</searchLink>. May2025, Vol. 121 Issue 8, p9679-9704. 26p.
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  Data: *<searchLink fieldCode="DE" term="%22Fluid+dynamics%22">Fluid dynamics</searchLink><br />*<searchLink fieldCode="DE" term="%22Building+layout%22">Building layout</searchLink><br />*<searchLink fieldCode="DE" term="%22Sustainable+communities%22">Sustainable communities</searchLink><br />*<searchLink fieldCode="DE" term="%22Tsunamis%22">Tsunamis</searchLink><br />*<searchLink fieldCode="DE" term="%22Complex+fluids%22">Complex fluids</searchLink><br />*<searchLink fieldCode="DE" term="%22Tsunami+damage%22">Tsunami damage</searchLink>
– Name: Abstract
  Label: Abstract
  Group: Ab
  Data: Coastal regions, facing rapid urbanization and increasing population density, are highly vulnerable to tsunamis, which can cause severe damage to infrastructure along shorelines. Despite the known risks, rebuilding efforts often occur in the same vulnerable areas without significant relocation. This study uses the DualSPHysics model, known for its precision in simulating complex fluid dynamics, to analyze the interaction between tsunamis and building models, specifically focusing on scenarios inspired by the 2018 Anak Krakatau Volcano tsunami. Six different layout scenarios of buildings, treated as macro-roughness elements (MRMs), were tested to explore their impact on tsunami forces. Model verification was conducted using laboratory data on tsunami forces acting on single and array models to ensure accuracy. The study identifies two primary mechanisms through which MRMs affect tsunami forces on a primary structure: shielding, which reduces direct wave impact and structural damage, and shadowing, which modifies wave reflection and flow patterns, thereby decreasing the overall force on the structure. These insights highlight the critical role of MRM placement in mitigating tsunami-induced forces, offering valuable guidance for enhancing coastal infrastructure resilience. The findings contribute to developing effective tsunami risk mitigation strategies, informing building design, and improving post-disaster recovery planning, ultimately promoting safer and more sustainable coastal communities. [ABSTRACT FROM AUTHOR]
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RecordInfo BibRecord:
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      – Type: doi
        Value: 10.1007/s11069-025-07178-3
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      – Code: eng
        Text: English
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        PageCount: 26
        StartPage: 9679
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        Type: general
      – SubjectFull: Building layout
        Type: general
      – SubjectFull: Sustainable communities
        Type: general
      – SubjectFull: Tsunamis
        Type: general
      – SubjectFull: Complex fluids
        Type: general
      – SubjectFull: Tsunami damage
        Type: general
    Titles:
      – TitleFull: Impact of tsunamis on buildings in array layouts as macro roughness: lessons from the 2018 Anak Krakatau event through DualSPHysics modeling.
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            NameFull: Triatmadja, Radianta
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            NameFull: Benazir
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            NameFull: Kuswandi
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            NameFull: Pratomo, Afaf Nadiyah Rifa
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            – D: 01
              M: 05
              Text: May2025
              Type: published
              Y: 2025
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              Value: 121
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            – TitleFull: Natural Hazards
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