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All Journal Jurnal Lingkungan Binaan Indonesia International Journal on Livable Space
Koerniawan, M. Donny
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Arts Humanities Civil Engineering, Building, Construction & Architecture Control & Systems Engineering Environmental Science Social Sciences

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Investigasi Ventilasi Gaya-Angin Rumah Tradisional Indonesia dengan Simulasi CFD Suhendri; Koerniawan, M. Donny
Jurnal Lingkungan Binaan Indonesia Vol. 5 No. 4 (2016): JLBI
Publisher : Ikatan Peneliti Lingkungan Binaan Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32315/jlbi.v5i4.228

Abstract

Bangunan modern di Indonesia hampir selalu menggunakan peralatan mekanis untuk menyediakan kenyamanan termal di dalam bangunan. Sementara bangunan tradisional dikenal tidak menggunakan strategi aktif dalam menyediakan kenyamanan termal bagi penghuninya. Dengan memfokuskan pada ventilasi gaya-angin, studi ini bertujuan untuk mempelajari pola pergerakan udara dan perubahan angin di dalam rumah tradisional Indonesia. Dua rumah tradisional dipilih sebagai studi kasus, Rumah Lampung dan Rumah Jawa, untuk dianalisis dengan simulasi komputer menggunakan software CFD. Sejalan dengan hasil studi, ventilasi alami pada rumah tradisional di Indonesia berpotensi menyediakan kenyamanan termal di dalam bangunan. Desain Rumah Jawa lebih dapat mengalirkan udara secara merata di dalam bangunan tanpa turbulensi dibanding Rumah Lampung. Namun, ventilasi gaya-angin yang terjadi pada Rumah Lampung dan Rumah Jawa belum optimal dalam mengurangi temperatur di dalam ruangan.
PREVENTING NOCTURNAL HEAT TRAPPING IN SEMI-OUTDOOR RETAIL CORRIDORS: RETROFIT HEURISTICS FROM HUMID-TROPICAL FIELD MEASUREMENTS Aziiz, Akhlish Diinal; Koerniawan, M. Donny; Nugrahenti, Fathina Izmi; Saskia, Cut Sannas; Mabe, Kentaro
International Journal on Livable Space Vol. 11 No. 1 (2026): CONTEX-RESPONSIVE AND ADAPTIVE ARCHITECTURE
Publisher : Jurusan Arsitektur - FTSP - Universitas Trisakti

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25105/livas.v11i1.24696

Abstract

In humid tropical cities, semi-outdoor retail corridors and promenades support daily activities by providing shade and comfortable walking spaces. However, high ambient humidity and limited nocturnal cooling can reduce the effectiveness after sunset. Thus, 24-hour thermal performance becomes a practical design concern. Objectives: To explain why semi-outdoor retail corridors in humid-tropical areas can remain warmer than adjacent open areas at night. Specifically: (i) quantify the occurrence and magnitude of nocturnal inversion using ΔUTCI/ΔTmrt (node-outdoor); (ii) interpret the patterns using a radiation-ventilation-storage (RVS) framework; and (iii) translate the diagnosis into five retrofit heuristics (H1-H5) for design and operation. Methodology and results: A multi-day field campaign in an Indonesian outlet recorded Ta, RH, and wind speed at outdoor and semi-outdoor nodes every 10 minutes. We derived UTCI and Tmrt, applied quality control, and aggregated the data to hourly medians. At matched timestamps, we computed ΔUTCI and ΔTmrt. During daytime, shaded corridors show clear relief (ΔUTCI < 0, ΔTmrt ≪ 0). At night, deeper under-canopies tend to have smaller Δ and often have a positive Δ, indicating slower post-sunset cooling. More open edges return to outdoor conditions earlier. Conclusion, significance and impact: Five retrofit heuristics are proposed: (H1) Raise local sky exposure; (H2) Split radiative roles; (H3) Enable night-purge paths; (H4) Reduce exposed thermal storage facing pedestrians; and (H5) Deploy vegetation, water, and fans calibrated for humid air. The findings emphasize the need for a day–night design duality—shade by day and release by night—to mitigate nocturnal heat trapping and support safer, more comfortable microclimates in humid tropical retail settings.
Co-Authors Ardiani, Nissa Aulia Aziiz, Akhlish Diinal Mabe, Kentaro Nugrahenti, Fathina Izmi Saskia, Cut Sannas Suhendri