Match!

The spherically symmetric droplet burning characteristics of Jet-A and biofuels derived from camelina and tallow

Published on Jun 1, 2013in Fuel5.128
· DOI :10.1016/j.fuel.2013.02.025
Yu Cheng Liu11
Estimated H-index: 11
(Cornell University),
Anthony J. Savas5
Estimated H-index: 5
(Cornell University),
C. Thomas Avedisian14
Estimated H-index: 14
(Cornell University)
Abstract
Abstract This study compares liquid fuel combustion characteristics of biofuels derived from camelina (POSF6152) and tallow (POSF6308) with a US domestic aviation fuel (Jet-A, POSF4658) using the spherically symmetric (one-dimensional) droplet flame configuration as the basis of comparison. A blend of camelina biofuel and Jet-A is also examined. The initial droplet diameters were fixed at 0.57 ± 0.03 mm. The biofuels studied have been considered as replacement fuels for conventional jet fuels. Results show that the evolutions of droplet, flame, and soot shell diameters for Jet-A and the bio-fuels are very similar regardless of intrinsic compositional differences among the individual fuels. Sooting behaviors were noted to be different with Jet-A forming significantly thicker soot clouds, most likely due to its higher aromatic content compared to biofuels. The broad similarities shown in this study were consistent with results reported in the literature for performance of the same fuel systems in actual turbine and flight tests where the fuel blends examined were noted to yield essentially indistinguishable differences in overall performance. The results suggest value to the spherical droplet flame configuration to assess performance of real fuels burning under far more complex transport conditions.
  • References (32)
  • Citations (19)
📖 Papers frequently viewed together
20125.13Fuel
5 Authors (Xin Hui, ..., Dylan Gardner)
91 Citations
238 Citations
2013
8 Citations
78% of Scinapse members use related papers. After signing in, all features are FREE.
References32
Newest
#1Yu Cheng Liu (Cornell University)H-Index: 11
#2Tanvir Farouk (USC: University of South Carolina)H-Index: 18
Last. C. Thomas Avedisian (Cornell University)H-Index: 14
view all 5 authors...
This study presents an experimental effort and detailed numerical simulation of the burning process of an ester-based biodiesel fuel droplet – methyl decanoate (MD). The experiments are carried out using test droplets that are anchored to small SiC support structures (14 lm diameter) and that burn in an ambience subjected to a low gravity level to promote spherical symmetry in the droplet burning process. The initial droplet diameters are 0.53–0.57 mm and the combustion gas is normal atmospheric...
18 CitationsSource
Abstract : As the largest single consumer of fuel in the United States, the Department of Defense (DOD) has the potential to make important contributions to the national effort to reduce the use of and reliance on fossil fuel. Aviation fuel makes up the largest portion of fossil fuel consumed by DOD and therefore represents the area of greatest potential energy savings. This report examines DOD's use of aviation fuel and possibilities to reduce that use by examining related issues and presenting...
6 Citations
#1Tanvir Farouk (Princeton University)H-Index: 18
#2Yu Cheng Liu (Cornell University)H-Index: 11
Last. Frederick L. Dryer (Princeton University)H-Index: 68
view all 5 authors...
Abstract Combustion characteristics of isolated sub-millimeter sized methyl butanoate (MB) droplets are studied at low gravity (10 −4 m/s 2 ) in a 1.2 s drop tower. In the experiments, droplets were grown and deployed onto the intersection of two 14 μm silicon carbide fibers in a cross-string arrangement and exposed to symmetrically placed spark ignition sources. The initial droplet diameter was fixed at 0.54 ± 0.01 mm, and experiments were carried out in room temperature air at atmospheric pres...
27 CitationsSource
#1Rolf D. Reitz (UW: University of Wisconsin-Madison)H-Index: 77
298 CitationsSource
#1Yu Cheng Liu (Cornell University)H-Index: 11
#2Anthony J. Savas (Cornell University)H-Index: 5
Last. C. Thomas Avedisian (Cornell University)H-Index: 14
view all 3 authors...
Abstract This study examines the droplet combustion characteristics of three and four component miscible liquid mixtures and compares the results with an aviation fuel (Jet-A) burning under the same conditions. The configuration used in the comparison is the base case of spherical symmetry whereby the droplet and flame are spherical and concentric. Mixtures consisting of n -decane/ iso -octane/toluene and n -dodecane/ iso -octane/1,3,5-trimethylbenzene/ n -propylbenzene in specific molar ratios ...
8 CitationsSource
#1Yu Cheng LiuH-Index: 11
#2Anthony J. SavasH-Index: 5
Last. C. Thomas AvedisianH-Index: 14
view all 3 authors...
This study reports on the droplet combustion characteristics of indolene and a commercial 87 octane-rated (no ethanol) unleaded gasoline. The experiments are performed in an environment that simplifies the gas transport to one created entirely by the evaporation process (i.e., purely radial), thereby promoting spherical symmetry of the droplet burning process under normal atmospheric pressure air. In this way, the data characterize the base case of liquid fuel combustion, whereby the flame and d...
7 CitationsSource
#1Christopher L. Dembia (Cornell University)H-Index: 7
#2Yu Cheng Liu (Cornell University)H-Index: 11
Last. C. Thomas Avedisian (Cornell University)H-Index: 14
view all 3 authors...
A simple automated image analysis algorithm has been developed that processes consecutive images from high speed, high resolution digital images of burning fuel droplets. The droplets burn under conditions that promote spherical symmetry. The algorithm performs the tasks of edge detection of the droplet’s boundary using a grayscale intensity threshold, and shape fitting either a circle or ellipse to the droplet’s boundary. The results are compared to manual measurements of droplet diameters done...
16 CitationsSource
#1Casey Allen (MSU: Michigan State University)H-Index: 8
#2Elisa Toulson (MSU: Michigan State University)H-Index: 16
Last. Tonghun Lee (MSU: Michigan State University)H-Index: 20
view all 4 authors...
Abstract A variety of new, alternative jet fuels are being considered as replacements for conventional petroleum-derived jet fuels, and the autoignition chemistry of these fuels are of prime interest. However, traditional batch-based premixture preparation approaches used in chemical kinetics studies are burdened by the low volatility of these fuels. In this work, a new charge preparation approach is described and characterized in which a fuel and air premixture is created directly in the test c...
31 CitationsSource
#1Xin Hui (Case Western Reserve University)H-Index: 5
#2Kamal Kumar (UConn: University of Connecticut)H-Index: 18
Last. Dylan Gardner (UConn: University of Connecticut)H-Index: 1
view all 5 authors...
Abstract Conventional Jet-A and six alternative jet fuels, including three Fischer–Tropsch “Synthetic Paraffinic Kerosene” (SPK) fuels and three “Hydrotreated Renewable Jet” (HRJ) fuels, have been experimentally investigated to obtain their fundamental combustion characteristics in terms of Derived Cetane Number (DCN), autoignition response, laminar flame speed, and extinction stretch rate for premixed combustion. The ignition delay times and DCNs for each jet fuel and selected binary blends of ...
91 CitationsSource
#1Yu Cheng Liu (Cornell University)H-Index: 11
#2C. Thomas Avedisian (Cornell University)H-Index: 14
Abstract The droplet burning characteristics of binary blends of iso-octane, n -heptane and toluene were studied in an ambience that minimizes external convection and promotes spherical droplet flames. The results are compared to gasoline (87 octane rating). The initial droplet diameter was fixed at 0.51 ± 0.02 mm and the experiments were carried out in room temperature air. Measurements of the evolution of droplet diameter show that iso-octane, n -heptane and their mixtures have almost identica...
29 CitationsSource
Cited By19
Newest
Abstract This work investigates the effect of adding two kerosene-based fuels namely jet fuel (J100) and paraffinic solvent (P100) to diesel and diesel–biodiesel blends on performance, combustion characteristics and emissions of high-compression ratio (21.5) compression ignition (CI) engine. Engine experiments were conducted at a constant speed of 2000 rpm over the entire load span. Experiments were performed using a single cylinder, air-cooled, 4-stroke, direct injection CI engine. Three volume...
Source
#1Bartosz GawronH-Index: 3
#2Tomasz BiałeckiH-Index: 2
view all 4 authors...
In the next decade, due to the desire for significant reduction in the carbon footprint left by the aviation sector and the development of a sustainable alternatives to petroleum, fuel from renewable sources will play an increasing role as a propellant for turbine aircraft engines. Currently, apart from five types of jet fuel containing synthesized hydrocarbons that are certified by the ASTM D7566 standard, there is yet another synthetic blending component that is at the stage of testing and cer...
Source
#1Atma Prakash (Teesside University)
Last. Jack Davies (Teesside University)
view all 2 authors...
Source
#1Ramraj H. Sundararaj (IITK: Indian Institute of Technology Kanpur)
#2Roshan Dinesh Kumar (IITK: Indian Institute of Technology Kanpur)H-Index: 1
Last. S.K. Puri (Indian Oil Corporation)H-Index: 1
view all 7 authors...
Abstract Fossil fuels are non-renewable resources that will be depleted within the next century, leading to an energy crisis in the near future. Furthermore, there has been a global focus on emissions and its effect on the climate. The aviation sector stands out as a unique sector because a substantial amount of its emissions are injected at cruise altitude giving increased effectiveness to the pollutants. Biofuels (BF) derived from Jatropha and Camelina feedstocks are considered as one of the n...
1 CitationsSource
#1Álvaro Muelas (University of Zaragoza)H-Index: 1
#2Pilar Remacha (University of Zaragoza)H-Index: 1
Last. Javier Ballester (University of Zaragoza)H-Index: 23
view all 3 authors...
Abstract The droplet combustion characteristics of conventional heating oil, UCO biodiesel and their mixtures (10 and 20% biodiesel by volume) were examined in a free-falling droplet combustion facility designed to approach the typical temperature and oxygen conditions around individual droplets in real boiler flames. Moreover, and given the importance of avoiding effects due to gravity or convection in this type of experiments, the quite spherical soot shells recorded (infrequent event in free-...
1 CitationsSource
#1Soo-Young No (CBNU: Chungbuk National University)H-Index: 11
Of various paraffinic (alkane) biofuels, the application of hydrotreated vegetable oil (HVO), biomass-to-liquid (BTL) diesel, and farnesane except biojet fuels to compression ignition engines will be discussed in this chapter. The property, fundamental combustion studies, and combustion and emission characteristics of neat paraffinic biofuels and blends with diesel or biodiesel will be analyzed. The interest in using these new renewable non-oxygenated fuels is recently increased. The serious sho...
Source
#1Dhurba Neupane (UNR: University of Nevada, Reno)H-Index: 1
#2Juan K. Q. Solomon (UNR: University of Nevada, Reno)H-Index: 3
Last. Tom Lawry (University of Nevada Cooperative Extension)H-Index: 1
view all 4 authors...
1 CitationsSource
#1Suchibrata Sen (IISc: Indian Institute of Science)H-Index: 1
#2Visakh Vaikuntanathan (IISc: Indian Institute of Science)H-Index: 7
Last. D. Sivakumar (IISc: Indian Institute of Science)H-Index: 13
view all 3 authors...
Abstract There is an emerging trend of employing bio-derived alternative fuels in automobile and aircraft engines to meet the strict norms of environmental pollution. The present study deals with the impact dynamics of camelina-derived alternative jet fuel drops corresponding to Weber number, We in the range 28–886 on heated flat stainless steel surface at surface temperature, T s ranging from 25 °C to 350 °C. The entire impact dynamics is captured using a high speed camera and analyzed to deduc...
4 CitationsSource
Abstract Direct use of vegetable oils as fuel in diesel engines leads to some important engine operational problems that need to be solved in order to make their usability possible. Canola oil was blended with kerosene by percentages of 90% canola oil-10% kerosene (C90&K10), 75% canola oil-25% kerosene (C75&K25) and 50% canola oil-50% kerosene (C50&K50). These blend fuels were initially analyzed by means of physicochemical fuel properties and comparisons were made with standard diesel fuel. Blen...
10 CitationsSource
#1Mithun Das (Jadavpur University)H-Index: 12
#2Arnab Chakraborty (Jadavpur University)H-Index: 1
Last. Apurba Kumar Santra (Jadavpur University)H-Index: 9
view all 4 authors...
ABSTRACTThe combustion of liquid fuel droplets provides fundamental information that is relevant to spray combustion. A porous sphere setup has been used to investigate non-premixed combustion experimentally with three different liquid fuels, viz. methanol, diesel, and biodiesel (sunflower oil methyl ester). Experiments have been performed at atmospheric pressure with spheres of different diameters and over a range of free stream air velocities, resulting in different types of flames from envelo...
7 CitationsSource