Phenomenological characteristics and flame radiation of dynamically evolving oil spill fires in a sealed ship engine room

Wang, Zhe; Lu, Kaifei; Zhang, Ruiqing; Li, Haihang; Zhang, Shaogang; Wang, Jinhui

doi:10.1016/j.oceaneng.2022.113298

Cited by 15 publications

(2 citation statements)

References 53 publications

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“…Additionally, the ignition sources during the initial stage of an engine room fire were affected by various factors, including the properties of the fuel, geometry of the ignition source, and environmental boundaries. A significant heat transfer mechanism was observed with a continuous fuel dispersion process and ignition [25]. In ship engine rooms, the conductive heat transfer term is not applicable, and heat loss to the substrate cannot be ignored in thin layers of marine fuel.…”

Section: Introductionmentioning

confidence: 99%

Experimental Study on the Hot Surface Ignition Characteristics and a Predictive Model of Marine Diesel in a Ship Engine Room

Wang,

Qiu,

Ming

et al. 2024

JMSE

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To ensure the safe protection of marine engine systems, it is necessary to explore the hot surface ignition (HSI) characteristics of marine diesel in ship environments. However, an accurate model describing these complex characteristics is still not available. In this work, a new experimental method is proposed in order to enhance prediction performance by integrating testing data of the characteristics of HSI of marine diesel. The sensitivity of HSI is determined by various factors such as surface parameters, flow state, and the ship’s environment. According to variations in the HSI status of marine diesel in an engine room, the HSI probability is distributed in three phases. It is essential to determine whether the presence of marine diesel or surrounding items can intensify the risk of an initial fire beginning in the engine room. A vapor plume model was developed to describe the relationship between HSI height and initial specific buoyancy flux in vertical space. Further, field distribution revealed significant variation in the increase in temperature between 200 and 300 mm of vertical height, indicating a region of initial HSI. In addition, increasing surface temperature did not result in a significant change in ignition delay time. After reaching a temperature of 773 K, the ignition delay time remained around 0.48 s, regardless of how much the hot surface temperature increased. This study reveals the HSI evolution of marine diesel in a ship engine room and develops data-based predictive models for evaluating the safety of HSI parameters during initial accident assessments. The results show that the goodness of fit of the predictive models reached above 0.964. On the basis of the predicted results, the HSI characteristics of marine diesel in engine rooms could be gleaned by actively determining the parameters of risk.

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Section: Introductionmentioning

confidence: 99%

Experimental Study on the Hot Surface Ignition Characteristics and a Predictive Model of Marine Diesel in a Ship Engine Room

Wang,

Qiu,

Ming

et al. 2024

JMSE

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“…In a ship engine room, a lot of pipelines are arranged, such as marine diesel oil, hydraulic oil, and lubricating oil pipelines. Once a pipe fails and marine fuel leaks on hot surfaces, a ship engine room fire tends to occur [18]. Zeinali et al [19] conducted a scaled experiment to evaluate the containment of smoke and heat flux induced by ship fires using water mist curtains, which indicated that the probability of flame spread to sections behind a water mist curtain decreased due to its cooling effect [19].…”

Section: Introductionmentioning

confidence: 99%

Effect of Lateral Airflow on Initial HSI and Flame Behavior of Marine Fuel in a Ship Engine Room: Experiment and Analysis

Wang,

Ming,

Liu

et al. 2023

JMSE

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The flame behavior of engine fires, such as those caused by leaked fuel coming into contact with an ignition source, is significant in practical applications, where flame detection is used to minimize the damage of the attendant ship fire safety problem. In this work, the flame behavior of hot-surface ignition (HSI) under crossflow was studied, with a particular focus on the difference in lateral airflow velocities for HSI-driven flame deviations at the windward and leeward sides of a ship engine room; a problem such as this has not previously been quantified. Full-scale experiments were conducted in a ship engine room using marine diesel and hydraulic oil as the fuel, and by adopting lateral airflow with the velocities of 0 m/s, 1.0 m/s, 3.0 m/s, and 5.0 m/s, together with an HSI mechanism consisting of marine diesel and hydraulic oil coming into contact with elevated hot-surface temperatures. The results show that the effects of disturbing the combustible gaseous mixture for marine fuel HSI, at both the windward and leeward sides, strengthened as the airflow velocity increased. The HSI position of the leaked marine fuel in the engine room was strongly dependent on ventilation, while that under the airflow condition decreased with the increase in the hot-surface temperature. A model was proposed to characterize this difference on the basis of the HSI height, which was defined as the ratio of the height during the initial HSI to the stationary period. The results indicate that the scale of the flame gradually increased in the horizontal direction, which was significantly different from the result in the scenario without mechanical ventilation. The results also revealed that the fluctuation of hydraulic oil through the temperature field was significant and lasted for a long time under a low HSI temperature.

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Experimental and model study on flame radiation characteristics of ethanol spill fires in tunnel environment

Zhang,

Ye,

Xia

et al. 2024

J Therm Anal Calorim

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Phenomenological characteristics and flame radiation of dynamically evolving oil spill fires in a sealed ship engine room

Cited by 15 publications

References 53 publications

Experimental Study on the Hot Surface Ignition Characteristics and a Predictive Model of Marine Diesel in a Ship Engine Room

Experimental Study on the Hot Surface Ignition Characteristics and a Predictive Model of Marine Diesel in a Ship Engine Room

Effect of Lateral Airflow on Initial HSI and Flame Behavior of Marine Fuel in a Ship Engine Room: Experiment and Analysis

Experimental and model study on flame radiation characteristics of ethanol spill fires in tunnel environment

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