Viscosity of n-hexadecane, n-octadecane and n-eicosane at pressures up to 243MPa and temperatures up to 534K

Baled, Hseen O.; Xing, Dazun; Katz, Harrison; Tapriyal, Deepak; Gamwo, Isaac K.; Soong, Yee; Bamgbade, Babatunde A.; Wu, Yue; Liu, Kun; McHugh, Mark A.; Enick, Robert M.

doi:10.1016/j.jct.2014.01.008

Cited by 32 publications

(33 citation statements)

References 29 publications

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“…The liquid-phase viscosity data of references (80, 85, 87, 100, 101) were used to provide the coefficients in Table 3, and a deviation plot for data up to 100 MPa is shown in Figure 25. Similar to what was shown for octadecane, there is a lot of scatter in the measurement of Baled et al (85). Based on comparisons with data, we estimate the uncertainty for the saturated liquid is 5 %, rising to 10 % at pressures to 100 MPa.…”

Section: N-eicosanesupporting

confidence: 75%

“…Lennard-Jones parameters were estimated with a new method developed especially for long-chain alkanes (97). The liquid-phase viscosity data of references (85,87,98) were used to provide the coefficients in Table 3, and a deviation plot for data up to 100 MPa is shown in Figure 22. The estimated uncertainty of the correlation is 3 % for the liquid viscosity over the range 303 K to 453 K at pressures to 100 MPa.…”

Section: N-octadecanementioning

confidence: 99%

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Preliminary models for viscosity, thermal conductivity, and surface tension of pure fluid constituents of selected diesel surrogate fuels

Huber¹

2017

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We describe preliminary models for the viscosity, thermal conductivity, and surface tension for pure fluids that are constituents of four surrogate fuels for ultralow-sulfur diesel fuels developed under the auspices of the Coordinating Research Council (CRC). These fluids do not presently have published reference fluid quality models in the open literature, so we provide here preliminary models based on available data as an interim measure to allow calculations of these properties for both the pure fluids and the four surrogate mixtures. Comparisons with selected experimental pure-fluid data are given, and text files compatible with the NIST REFPROP computer program are included as supplementary material. We also present tabulations of the viscosity, thermal conductivity, and surface tension along the bubble point for four surrogate fuels.

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Section: N-eicosanesupporting

confidence: 75%

Section: N-octadecanementioning

confidence: 99%

Preliminary models for viscosity, thermal conductivity, and surface tension of pure fluid constituents of selected diesel surrogate fuels

Huber¹

2017

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“…Based on these criteria, 10 datasets were considered primary viscosity data. Table 1 summarizes the primary data 30, 51,52,61,63,69,77,93,97,106 detailing the temperature and pressure ranges, the authors′ uncertainty attributed to the measurements, claimed purity of the sample, and the technique employed to perform the measurements. The choice of primary data is discussed in more detail in section 3 that also provides a comparison of the data by different workers.…”

Section: Experimental Viscosity Datamentioning

confidence: 99%

Reference Correlation of the Viscosity of n-Hexadecane from the Triple Point to 673 K and up to 425 MPa

Meng

Sun

Cao

et al. 2018

Journal of Physical and Chemical Reference Data

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A new correlation for the viscosity of n-hexadecane is presented. The correlation is based upon a body of experimental data that has been critically assessed for internal consistency and for agreement with theory. It is applicable in the temperature range from the triple point to 673 K at pressures up to 425 MPa. The overall uncertainty of the proposed correlation, estimated as the combined expanded uncertainty with a coverage factor of 2, varies from 1% for the viscosity at atmospheric pressure to 10% for the viscosity of the vapor phase at low temperatures. Tables of the viscosity, generated by the relevant equations, at selected temperatures and pressures, and along the saturation line, are provided.-1 -CONTENTS

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“…% isooctane (PRF25). Properties of the mixtures are not available for the injection pressures employed in this work, but properties of the normal alkanes n-heptane and n-hexadecane are given in Table 2 for a pressure of 800 bar and a temperature of 360 K [11][12][13][14]. These properties represent conditions in the injector rather than in the nozzle or the measurement chamber.…”

Section: Resultsmentioning

confidence: 99%

Parametric Study of Injection Rates With Solenoid Injectors in an Injection Quantity and Rate Measuring Device

Busch

Miles

2014

Volume 1: Large Bore Engines; Fuels; Advanced Combustion; Emissions Control Systems

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The rate at which fuel is injected into the cylinder of a direct injection Diesel engine has significant implications for the ensuing mixture formation and combustion processes. Advances in fuel injector technology enable a variety of advanced injection strategies, particularly very closely coupled injection events. In this work, a Moehwald HDA injection quantity and rate measuring unit is used to investigate the injection rates obtained with a pre-production solenoid injector with a fast acting, pressure-balanced control valve using a blend of n-hexadecane and heptamethylnonane (DPRF58). The effects of digital signal filtering on the rate shape and injected mass are investigated for a single injection. Additionally, the effects of physical parameters such as fuel and measurement chamber temperature, axial clamping force on the injector, high pressure line length, and solenoid current pull up time on the rate shape are investigated. The primary purpose of these simple parameter variations is to establish whether or not they have an impact on the measured injection rate traces and/or total measured injected masses. At each dwell time, the rates of injection are compared between the three injectors tested. These results show that these pre-production injectors can operate with very short dwell times while the injection rate curves indicate distinct pilot and main injection events and an influence of dwell on the rate shape of the main injection. Testing with PRF, a blend of n-heptane and isooctane, shows that while rates of injection are comparable to those obtained with the DPRF for a single injection, they are dramatically different for multiple injections. This has significant implications for the optical diagnostic techniques that may be employed to study the effects of multiple injections on the mixture formation process.

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Viscosity of n-hexadecane, n-octadecane and n-eicosane at pressures up to 243MPa and temperatures up to 534K

Cited by 32 publications

References 29 publications

Preliminary models for viscosity, thermal conductivity, and surface tension of pure fluid constituents of selected diesel surrogate fuels

Preliminary models for viscosity, thermal conductivity, and surface tension of pure fluid constituents of selected diesel surrogate fuels

Reference Correlation of the Viscosity of n-Hexadecane from the Triple Point to 673 K and up to 425 MPa

Parametric Study of Injection Rates With Solenoid Injectors in an Injection Quantity and Rate Measuring Device

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