Experimental study of the ignition delay of diesel/biodiesel blends using a shock tube

Hoang, Vu Nguyen; Thi, Luong Dinh

doi:10.1016/j.biosystemseng.2015.03.009

Cited by 27 publications

(8 citation statements)

References 19 publications

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“…2 (approximately the driven and driver section have the same length). In contrast, diaphragm position‐1 and position‐3 models were pretty ideal in finding the IDT of Diesel fuels, as they provided a high Mach number and high reflected wave temperature values as in the references 48‐55 …”

Section: Resultsmentioning

confidence: 99%

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An experimental and numerical investigation of the effects of the diaphragm pressure ratio and its position on a heated shock tube performance

Badri

Elbashir

Saker

et al. 2022

Energy Science & Engineering

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The main purpose of this work was to investigate the performance of heated shock tube (ST) with different pressure ratios and diaphragm positions numerically and experimentally. The numerical model was developed to simulate the fluid flow inside a shock tube test facility located at Qatar University. The shock tube was a cast‐iron hollow tube with 6 m length, 50 mm internal diameter and 10 mm thickness. ST driver and driven sections were filled with helium–argon mixture and air. The driven section was heated up to 150°C using coils. At the middle of the ST, the diaphragm was made of aluminium sheet (0.5 mm) layers. Five different pressure ratios were implemented during the experiment, and performance evaluation depended on the strength of the incident shock Mach number. The inviscid numerical model solver used transient two‐dimensional time‐accurate Navier–Stokes CFD. The model introduced a parametric study regarding three different diaphragm positions (1m, 2m and 3m) and five pressure ratios (6–10) for each position. In addition to yielding the incident and reflected wave Mach number, reflected wave temperature was also considered a shock tube performance indicator. The incident Mach numbers for the diaphragm middle position from the experiment were compared against those conducted from the model, and good matching was observed. The parametric study results showed that at high‐pressure ratios, diaphragm Positions 1 and 3 could generate a 7.4% increase in shock wave Mach number compared with the diaphragm position‐2 model. Moreover, the diaphragm position‐3 model tends to have a 2% increase in the temperature behind the reflected shock wave compared with the other two positions.

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Section: Resultsmentioning

confidence: 99%

“…Diaphragm pressure ratio vs. incident Mach number (M i ) F I G U R E 1 0 Incident Mach number dependency on diaphragm location and pressure ratioMach number and high reflected wave temperature values as in the references[48][49][50][51][52][53][54][55] …”

mentioning

confidence: 99%

An experimental and numerical investigation of the effects of the diaphragm pressure ratio and its position on a heated shock tube performance

Badri

Elbashir

Saker

et al. 2022

Energy Science & Engineering

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“…The tests were performed at temperatures from 1000 to 1400 K and equivalence ratio 0.85 and 1.15. [14] also conducted shock tube tests with mixture of biodiesel with diesel fuel and were found ignition delay times for all fuel testing ranging from 60 to 2600 microseconds for testing at pressure at 0.12 Mpa. The tests were performed at temperatures from 1174 to 1685 K and equivalence ratio 0.5, 1 and 1.5.…”

Section: Analytical Solution Shock Tube For Ideal Gasmentioning

confidence: 99%

Shock Tube Combustion Analysis

Santana¹,

Barros²

2021

Internal Combustion Engine Technology and Applications of Biodiesel Fuel

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The shock tube is a metal tube that the gas at low pressure and high pressure are separated by a diaphragm. When the diaphragm (make of material copper and aluminum) breaks on predetermined conditions (high pressure in this case) produces shock waves that move from the high-pressure chamber (known the compression chamber or Driver section) for low pressure chamber (known the expansion chamber or Driven section). The objective of this work is the correlate the ignition delay times of convectional Diesel and Biodiesel from soybean oil measured in a shock tube. The results were correlated with the cetane number of respective fuels and compared with the ignition delay times of Diesel and Biodiesel with cetane numbers of known. The ignition delay time of biodiesel from soybean oil was approximately three times greater than the ignition delay time of convectional Diesel. The contribution of this work is that it shows why pure biodiesel should not be used as substitutes for Diesel compression ignition engines without any major changes in the engines.

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“…The IDT experimental data for the validation of diesel-biodiesel model is obtained from Hoang et al [9] using real dieselbiodiesel fuel.…”

Section: Methodsmentioning

confidence: 99%

Simulation of the Oxidation and Combustion of Mixed Diesel-Biodiesel Fuel

2018

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Abstract.A comparative simulation-based research has been set up to obtain valid kinetic models of the oxidation and combustion of biodiesel surrogate and diesel surrogate, as well as mixed diesel-biodiesel surrogates which is used to predict their ignition delay times (IDT). The research consists of the development of the detailed kinetic models of the oxidation and combustion of biodiesel surrogate and diesel surrogate, the validation of the two models with the corresponding experimental IDT data, the merging and the validation of the two models for mixed diesel-biodiesel surrogates. The biodiesel surrogate kinetic model was validated with the experimental IDT data of methyl 9-decenoate at 20 atm and three equivalence ratios. The diesel surrogate kinetic model was validated with the experimental IDT data of n-hexadecane at the pressure ranging from 2 atm to 5 atm and the equivalence ratio of 1.0. The diesel-biodiesel surrogate kinetic model was validated with the experimental IDT data of real diesel-biodiesel fuels for four compositions and at 1.18 atm. The validation results of all models show that the models and the experiments are in good agreement.

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Experimental study of the ignition delay of diesel/biodiesel blends using a shock tube

Cited by 27 publications

References 19 publications

An experimental and numerical investigation of the effects of the diaphragm pressure ratio and its position on a heated shock tube performance

An experimental and numerical investigation of the effects of the diaphragm pressure ratio and its position on a heated shock tube performance

Shock Tube Combustion Analysis

Simulation of the Oxidation and Combustion of Mixed Diesel-Biodiesel Fuel

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