The U.S. Army in the Iraq War – Volume 1: Invasion – Insurgency – Civil War, 2003-2006

The Iraq War has been the costliest U.S. conflict since the Vietnam War. To date, few official studies have been conducted to review what happened, why it happened, and what lessons should be drawn. The U.S. Army in the Iraq War is the Army’s initial operational level analysis of this conflict, written in narrative format, with assessments and lessons embedded throughout the work. This study reviews the conflict from a Landpower perspective and includes the contributions of coalition allies, the U.S. Marine Corps, and special operations forces. Presented principally from the point of view of the commanders in Baghdad, the narrative examines the interaction of the operational and strategic levels, as well as the creation of theater level strategy and its implementation at the tactical level. Volume 1 begins in the truce tent at Safwan Airfield in southern Iraq at the end of Operation DESERT STORM and briefly examines actions by U.S. and Iraqi forces during the interwar years. The narrative continues by examining the road to war, the initially successful invasion, and the rise of Iraqi insurgent groups before exploring the country’s slide toward civil war. This volume concludes with a review of the decision by the George W. Bush administration to “surge” additional forces to Iraq, placing the conduct of the “surge” and its aftermath in the second volume. This study was constructed over a span of 4 years and relied on nearly 30,000 pages of hand-picked declassified documents, hundreds of hours of original interviews, and thousands of hours of previously unavailable interviews. Original interviews conducted by the team included President George W. Bush, Secretary of State Condoleezza Rice, Secretaries of Defense Leon Panetta and Robert Gates, Chairmen of the Joint Chiefs of Staff, and every theater commander for the war, among many others. With its release, this publication, The U.S. Army in the Iraq War, represents the U.S. Government’s longest and most detailed study of the Iraq conflict thus far. NOTICE: Due to the high cost of printing, only a limited numbers of hard copies of The U.S. Army in the Iraq War will be produced. These copies will be distributed primarily to military educational institutions across the Joint force. Hardcopies of the study can be acquired through the Government Printing Office Bookstore. Organizations and individuals will be able to order printed copies. Both volumes of The U.S. Army in the Iraq War are available for pre-order through the GPO Bookstore. Volume 1 can be found here. And Volume 2 can be found here. ADDENDUM: The U.S. Army Heritage and Education Center (USAHEC) has no archive of declassified documents except for the declassified documents from U.S. Central Command (USCENTCOM) posted online here. USAHEC does not have the authority to declassify or to review OIF sources for release.https://press.armywarcollege.edu/monographs/1385/thumbnail.jp

Operational Reservations: Considerations for a Total Army Force

View the Executive SummaryAs the Army Reserve Components—the Army Reserve and the Army National Guard—assume an “operational” mission as the force drawdowns in overseas contingency operations occur, the Army senior military and civilian leadership should consider the ramifications and realities of such a mission in what is expected to be a relatively peaceful time. This monograph explores some of these considerations regarding the implementation of the Army Total Force Policy, identifies potential obstacles, and makes recommendations to better engage the “three Armies” in a successful and meaningful reform effort. Throughout, the authors call for significant cultural shifts in thinking about how the Reserve Components are used and integrated into a Total Force.https://press.armywarcollege.edu/monographs/1495/thumbnail.jp

Flow boiling heat transfer of a non-azeotropic mixture inside a single microchannel

This paper was presented at the 4th Micro and Nano Flows Conference (MNF2014), which was held at University College, London, UK. The conference was organised by Brunel University and supported by the Italian Union of Thermofluiddynamics, IPEM, the Process Intensification Network, the Institution of Mechanical Engineers, the Heat Transfer Society, HEXAG - the Heat Exchange Action Group, and the Energy Institute, ASME Press, LCN London Centre for Nanotechnology, UCL University College London, UCL Engineering, the International NanoScience Community, www.nanopaprika.eu.This study moves from the need to study flow boiling of zeotropic mixture in microchannels. In the recent years much attention has been paid to the possible use of fluorinated propene isomers for the substitution of high-GWP refrigerants. The available HFOs (hydrofluoroolefins) cannot cover all the air-conditioning, heat pump, and refrigeration systems when used as pure fluids because their thermodynamic properties are not suitable for all operating conditions and therefore some solutions may be found using blends of refrigerants, to satisfy the demand for a wide range of working conditions. In the present paper a mixture of R1234ze(E) and R32 (0.5/0.5 by mass) has been studied. The local heat transfer coefficient during flow boiling of this mixture in a single microchannel with 0.96 mm diameter is measured at a pressure of 14 bar, which corresponds to a bubble temperature of 26.3°C. The flow boiling data taken in the present test section are discussed, with particular regard to the effect of heat flux, mass velocity and vapor quality. The heat transfer coefficients are compared against some predicting models available in the literature. Furthermore, the new experimental data are compared to flow boiling data of pure R1234ze(E) and pure R32 to analyze the heat transfer penalization due to the mass transfer resistance of this zeotropic mixture

Condensation in a square minichannel: application of the VOF method

This paper was presented at the 3rd Micro and Nano Flows Conference (MNF2011), which was held at the Makedonia Palace Hotel, Thessaloniki in Greece. The conference was organised by Brunel University and supported by the Italian Union of Thermofluiddynamics, Aristotle University of Thessaloniki, University of Thessaly, IPEM, the Process Intensification Network, the Institution of Mechanical Engineers, the Heat Transfer Society, HEXAG - the Heat Exchange Action Group, and the Energy Institute.A number of steady-state simulations of condensation of R134a at mass fluxes G=100 kg m-2s-1 and G=800 kg m-2s-1 inside a square cross section minichannel (Dh=1mm) are here proposed and compared against similar simulations in a circular cross section channel with same diameter. The VOF (Volume Of Fluid) method is used to track the vapour-liquid interface and the effects of interfacial shear stress and surface tension are both taken into account. A uniform wall temperature is fixed as boundary condition. At G=100 kg m-2s-1 the liquid film is assumed laminar and the vapour flow is turbulent; turbulence is handled by a low-Reynolds number form of the standard k-w model (Wilcox, 1998), which was modified in order to suppress the turbulent viscosity inside the liquid phase. At G=800 kg m-2s-1 a low Re form of the SST k-w model (Menter, 1994) has been used for turbulence modeling through both the liquid and vapour phases. Numerical simulations are validated against experimental data. The present paper looks at the effect of surface tension. Its influence on the shape of the vapour-liquid interface provides some heat transfer enhancement in non-circular minichannels. In circular minichannels, the overall effect of surface tension is shown to be not significant. On the contrary, the effect of surface tension in square channels provides a large enhancement at low mass flux

Choriocarcinoma: a rare case of stomach metastasis

Choriocarcinoma is a rare form of cancer which commonly occurs in women of reproductive age, rarely in post-menopausal women and in women under 20 years of age. We report a rare case of uterine choriocarcinoma with stomach metastasis in a 29 year-old woman who presented with upper gastrointestinal symptoms. The presented case report emphasizes the need for innovative treatment approach and appropriate diagnostic technology to enable early diagnosis and correct treatment. Furthermore the case highlights the need for healthcare workers to consider rare causes of gastrointestinal signs and symptoms

Optimization of hybrid sol-gel coating for dropwise condensation of pure steam

We developed hybrid organic-inorganic sol-gel silica coatings with good durability in harsh environment (high temperatures, high vapor velocities) and with slightly hydrophobic behavior, sufficient to promote dropwise condensation (DWC) of pure steam. DWC is a very promising mechanism in new trends of thermal management and power generation systems to enhance the heat transfer during condensation as compared to film-wise condensation (FWC). The sol-gel coatings have been prepared from methyl triethoxy silane (MTES) and tetraethyl-orthosilicate (TEOS) and deposited on an aluminum substrate. The coatings were optimized in terms of precursor ratio and annealing temperature highlighting potentials and limits of such mixtures. A comprehensive surface characterization before and after saturated steam condensation tests has been performed and related to the thermal measurements for evaluating the heat transfer augmentation as compared to FWC obtained on untreated aluminum surfaces. The results showed that the developed hybrid organic-inorganic sol-gel silica coatings are promising DWC promoters

Development of interconnected silicon micro-evaporators for the on-detector electronics cooling of the future ITS detector in the ALICE experiment at LHC

This paper was presented at the 4th Micro and Nano Flows Conference (MNF2014), which was held at University College, London, UK. The conference was organised by Brunel University and supported by the Italian Union of Thermofluiddynamics, IPEM, the Process Intensification Network, the Institution of Mechanical Engineers, the Heat Transfer Society, HEXAG - the Heat Exchange Action Group, and the Energy Institute, ASME Press, LCN London Centre for Nanotechnology, UCL University College London, UCL Engineering, the International NanoScience Community, www.nanopaprika.eu.The design of the future High Energy Physics (HEP) particle detectors for the upgrade of the LHC (Large Hadron Collider) experiments at CERN (European Organization for Nuclear Research) is pushing technological frontiers to the limit trying to reach unprecedented accuracy in particles identification and particle production dynamics in ultra-relativistic hadron collisions. The thermal management of the on-detector electronics and the development of low mass integrated cooling systems have become a crucial task in the design of silicon tracking detectors for HEP applications. In this paper, we present a novel concept of low mass interconnected silicon microchannel devices for the future Inner Tracking System of the ALICE (A Large Ion Collider Experiment) detector at LHC. This innovative design achieves the requirements of the detector while minimizing the total material budget

Flow boiling of R245fa in a single circular microchannel

This paper was presented at the 2nd Micro and Nano Flows Conference (MNF2009), which was held at Brunel University, West London, UK. The conference was organised by Brunel University and supported by the Institution of Mechanical Engineers, IPEM, the Italian Union of Thermofluid dynamics, the Process Intensification Network, HEXAG - the Heat Exchange Action Group and the Institute of Mathematics and its Applications.The present paper describes an experimental setup for the investigation of two-phase heat transfer inside microchannels and reports local heat transfer coefficients measured during flow boiling of HFC-245fa in a 0.96 mm diameter single circular channel. The test runs have been performed during vapourization at around 1.85 bar, corresponding to 31 oC saturation temperature. As a peculiar characteristic of the present technique, the heat transfer coefficient is not measured by imposing the heat flux; instead, the boiling process is governedby controlling the inlet temperature of the heating secondary fluid. In the data, mass velocity ranges between 200 and 400 kg/m2s, with heat flux ranging between 5 and 85 kW/m2 and vapor quality from 0.05 up to 0.8. Since these data are not measured at uniform heat flux conditions, a proper analysis is performed to enlighten the influence of the different parameters and to compare the present data to those increasing the water-to-refrigerant temperature difference and by decreasing it. Finally, the experimental data are compared to models available in the literature for prediction of the heat transfer coefficients inside microchannels